E-ISSN 2249–8974
  International Journal of Advanced Engineering Research and Studies
 

 -An Open Access Peer Reviewed e-Journal

 

 
 

ESTIMATION OF PRESSURE DROP OF PACKED COLUMN USING ARTIFICIAL NEURAL NETWORK

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/01-03

 

Authors: S. L. Pandharipande, Ankit Singh

ABSTRACT

EVALUATION OF COMPOSITE ELECTRIC SYSTEM PERFORMANCE INDICES USING SEQUENTIAL MONTE CARLO SIMULATION

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/04-07

 

Authors: H. J. Jayatheertha

ABSTRACT
In this paper Sequential Monte Carlo Simulation technique is considered and reliability indices are computed for 6-Bus Roy Billinton Test System. Mathematical models for optimal load curtailment in case of emergency are given. Two models are employed. One model is used for active load curtailment while the other is used for reactive load curtailment. Formulae for calculating load curtailment indices are defined. RBTS and chronological load model is described. Evaluation of the indices is presented and calculation of indices for 3000 sample year is illustrated using the modules developed on MATLAB IDE.

ANALYSIS OF STEEL ROOF TRUSS UNDER NORMAL PERMEABILITY CONDITION

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/08-12

 

Authors: Dr. S.K. Dubey*, Prakash Sangamnerkar, Prabhat Soni

ABSTRACT
The main purpose of this study is to analyze the steel roof truss under the normal permeability condition of wind according to Indian Standard Code IS: 875(Part 3)-1987, in which, intensity of wind load is calculated considering different conditions of class of structure, Terrain, height and structure size factor, topography factor, permeability conditions and compare the results so obtained with the calculations made in SP-38(S&T):1987; Handbook for typified designs for structures with steel roof trusses, in which there is no consideration for different conditions as mentioned above. Because of this, there are large variations in calculated results for wind loads and design forces in members of truss. Analysis of trusses called A-shaped truss is addressed.

DESIGN AND DEVELOPMENT OF SPM-A CASE STUDY IN GANG MILLING MACHINE FOR MANUFACTURING OF CONVEYOR CHAIN BUSHES

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/13-17

 

Authors: Mr. S. V. Shekhar, Prof. H. G. Patil

ABSTRACT
This paper discusses the case study and comparison of productivity of component using conventional horizontal milling machine and special purpose gang milling machine (SPM) for manufacturing of conveyor chain bushes. In this case study, the SPM is used for manufacturing of conveyor chain bushes which requires two flat milling operations at both ends. In this paper the following studies are carried out 1. Reduction in cycle time due to automation, 2. Increase in productivity both qualitative and quantitative, 3. Less human intervention, indirectly reduction in operator fatigue, 4. Less rejection due to automatic controls and 5. Increase the profit of company.

MODELING AND SIMULATION OF VARIOUS SRF METHODS FOR SHUNT ACTIVE POWER FILTER AND APPLICATION TO BLDC DRIVE

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/18-22

Authors: N. Srinivasa Rao, H.J. Jayatheertha

ABSTRACT
With the widespread use of harmonic generating devices, the control of harmonic currents to maintain a high level of power quality is becoming increasingly important. An effective way for harmonic suppression is the harmonic compensation by using active power filter. This paper presents a comprehensive survey of active power filter (APF) control strategies put forward recently. It is aimed at providing a broad perspective on the status of APF control methods to researchers and application engineers dealing with harmonic suppression issues. Many control techniques have been designed, developed, and realized for active filters in recent years. This paper presents different types of Synchronous reference frame methods for real time generation of compensating current for harmonic mitigation and reactive power compensation. All the techniques are analyzed mathematically and simulation results are obtained which are being compared in terms of its compensation performance with different parameters under steady state condition. The three techniques analyzed are the Synchronous Reference Frame Theory (SRF), SRF theory without synchronizing circuit like phase lock loop (PLL) also called instantaneous current component theory and finally modified SRF theory. Simulation results are obtained under sinusoidal balanced voltage source balanced load condition. The comparison and effectiveness of all the methods is based on the theoretical analysis and simulation results obtained with MATLAB employing a three phase three wire shunt active filter test system. Finally shunt active power filter is applied to BLDC drive application. THD plots with and without APF is presented.

EFFECT OF SCREEN RULING ON DOT GAIN IN SELF ADHESIVE LABELS

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/23-24 

 

Authors: Rashmi Bhat

ABSTRACT
The self Adhesive Labels have the 4 layered sandwich structure of face paper, adhesive, silicone coating and release liner. The labels have grown from a simple information carrier to the point of purchase communicator for the package. Hence the graphics includes more of colors and halftone in addition to the text and line prints now a days. The paper covers the study of effect of screen ruling and machine speed on the dot gain of the self adhesive label. The coated face stock is chosen for analysis and the performance is studied for glassine paper liner labels [7]. The dot gain at 50% dot area is measured at different speeds and different screen rulings for the label material as it gives an idea about dot gain at other levels also. The minimum dot gain is obtained with lowest screen ruling.

CONDUCTIVITY AND DIELECTRIC PROPERTIES OF M-TYPE BARIUM MAGNESIUM HEXAFERRITE POWDER

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/25-27

 

Authors: Chetna C. Chauhan, Rajshree B. Jotania*, Kanti R. Jotania

ABSTRACT
M-type hexaferrite with the composition BaMg2Fe10O19 were synthesized using a stearic acid sol gel method. The precursors were calcinated at 650 °C, 750 °C, 850 °C and 950ºC for 4 hrs in a furnace and slowly cooled to room temperature in order to obtain BaMg2Fe10O19 crystalline ferrite powder. The dielectric constants (real Є’ and imaginary Є”), conductivity (σ), resistivity (ρ) and dielectric loss (tan δ) have been measured at room temperature as a function of frequency (102-106 Hz). The dielectric behavior of prepared hexaferrite samples can be explained by the mechanism of polarization and the electrical conduction mechanism is explained by using the electronic hopping model of Heike – Johnson.

PARAMETRIC OPTIMIZATION OF MIG WELDING USING TAGUCHI DESIGN METHOD

IJAERS/Vol. I / Issue IV/July-Sept., 2012/28-30

 

Authors: S. V. Sapakal, M. T. Telsang

 

ABSTRACT
Metal Inert Gas welding (MIG) process is an important component in many industrial operations. The GMA welding parameters are the most important factors affecting the quality, productivity and cost of welding. This paper presents the influence of welding parameters like welding current, welding voltage, welding speed on penetration depth of MS C20 material during welding. A plan of experiments based on Taguchi technique has been used to acquire the data. An Orthogonal array, signal to noise (S/N) ratio and analysis of variance (ANOVA) are employed to investigate the welding characteristics of MS C20 material & optimize the welding parameters. Finally the conformations tests have been carried out to compare the predicated values with the experimental values confirm its effectiveness in the analysis of penetration.

WHITE TOPPING AS A REHABILITATION METHOD: A CASE STUDY OF BUDHEL-GHOGHA ROAD

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/31-35

 

Authors: Mitesh D. Patel, Prof. P.S. Ramanuj, Bhavin Parmar, Akash Parmar

ABSTRACT
White topping is rehabilitation treatment on asphalt concrete. It is defined as Plain Cement Concrete overlay on asphalt concrete. It provides a new innovative method of rehabilitation at a very low cost with very good results and low maintenance cost. This method of rehabilitation/strengthening can be adopted for rural road network and district roads as these roads have low to moderate traffic. Even on the State Highways and some recently declared National Highways, where traffic is moderate, the above method of strengthening has a lot of promise. By adopting proper construction methods, we
can rehabilitate large network of roads at reasonable cost and we get additional long life. This paper presents a methodology to adopt white topping as rehabilitation treatment and cost-effective rehabilitation alternative for preserving bituminous pavements on long-term basis.

FPGA IMPLEMENTATION OF FLOATING POINT RECIPROCATOR

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/36-38

Authors: B. Sujatha, D. Raghunatha Rao

ABSTRACT
In this paper an efficient FPGA implementation of a reciprocator for both IEEE single-precision and double-precision floating numbers is presented. This method is based on the use of look-up-tables (LUTs) and partial block multipliers. Previously the LUTs and Multipliers are mostly used, in these methods accuracy is not achieved and area occupied by them is also more. In the proposed method, number of LUTs and multipliers are reduced such that performance in terms of frequency and accuracy is improved and also latency is reduced. The designs trade off either 1 unit in last –place (ulp) or 2 ulp of accuracy (for double or single precision respectively), without rounding, to obtain a better implementation. Rounding can also be added to the design to restore some accuracy at a slight sacrificing in area.

STRUCTURAL AND THERMAL ANALYSIS OF DISC BRAKE WITH AND WITHOUT CROSSDRILLED ROTAR OF RACE CAR

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/39-43

 

Authors: Ameer Fareed Basha Shaik, Ch.Lakshmi Srinivas

ABSTRACT
The disc brake is a device for slowing or stopping the rotation of a wheel. Friction causes the disc and attached wheel to slow or stop. Brakes convert friction to heat, but if the brakes get too hot, they will cease to work because they cannot dissipate enough heat. This condition of failure is known as brake fade. Disc brakes are exposed to large thermal stresses during routine braking and extraordinary thermal stresses during hard braking.
This paper studies about the model of a disc brake used in Honda Civic. Coupled field analysis (Structural+Thermal) is done on the disc brake. The materials used are Cast Iron. Analysis is also done by changing the design of disc brake. Actual disc brake has no holes; design is changed by giving holes in the disc brake for more heat dissipation. Modeling is done in Catia and Analysis is done in ANSYS.

PRODUCT DERIVATION THROUGH FEATURE MODELING: AN APPROACH

IJAERS/Vol. I / Issue IV/July-Sept., 2012/44-47

 

Authors: Himanshu Hora, Dr. K.C. Joshi, Siddharth Pandey

ABSTRACT
The act of implementing a software product line results in a high degree of variance within the software architecture. During product derivation it is essential to resolve variation points within the architecture and source code automatically, which in turn enables a good development and deployment. In this paper, we suggest a method for feature implementation model for product derivation. In the given method, feature implementation model is demonstrated as the intermediate level between feature model and program implementation. The implementation of feature model expresses clearly the feature interactions in the better role level, and thus in turn helps to clarify the complex mapping between feature and program implementation. Thus, feature-driven program-level customization and configuration can be enabled by the model and role instantiation.

ESTIMATION OF ACETAMINOPHEN IN WASTE WATER OF BHILAI REGION

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/48-49

 

Authors: Reena Mathai, Santosh Kumar Sar

ABSTRACT
Two simple, rapid and sensitive spectrophotometric methods were selected for the estimation of acetaminophen in waste water. The first method was based on oxidation of drug with iron(iii) ions. The second method is based on reaction of drug with sodium bismuthate. The first method is found to be comparatively successful. The results have been statistically compared with those obtained by proposed methods.

 

OPTIMIZATION OF TEA WASTE ACTIVATED CARBON PREPARATION PARAMETERS FOR REMOVAL OF CIBACRON YELLOW DYE FROM TEXTILE WASTE WATERS

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/50-56

 

Authors: Manase Auta

 

ABSTRACT
Waste from tea, a beverage globally consumed is a common menace discarded to the environment thereby contributing to environmental pollution. The textile and paper industries have also been major culprits in the pollution of the environment through their indiscriminate discharge of dye solutions. These dyes are carcinogenic, mutagenic, and generally harmful to the entire eco-system; this has posed a major challenge to the general populace. This research has tried to harness potentials of waste from tea by converting it to adsorbent used for adsorption of Cibacron yellow dye (CBY). Chemical activation with potassium hydroxide was used for the conversion of the tea waste to viable activated carbon (WTC). Response surface methodology, a central composite design tool was used to optimize the WTC preparation parameters which were activation temperature, chemical impregnation ratio and activation time with targeted responses of yield and the percentage dye removal. About 21.30 and 95.07 % yield and CBY removal respectively, were obtained at optimum preparation conditions of 760 oC, 1.8 IR and 135 min. Langmuir isothermal was the most fitting model for the adsorption process than Freundlich model. The kinetic studies showed that pseudo-second-order kinetics described the adsorption process better than pseudo-first-order kinetic model. The WTC prepared at optimum conditions had surface area of 830 m2/g with a total pore size of 0.563 cm3/g. The activated carbon produced from tea waste was found to be a good adsorbent for removal of CBY from waste waters.

FEASIBILITY OF INSTALLATING RICE HUSK POWER PLANT IN CHHATTISGARH TO MEET SUSTAINABLE ENERGY DEMANDS

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/57-60

 

Authors: Ritesh Pandey, Santosh K. Sar, Ashish Kumar Bhui

ABSTRACT
The rising cost of fuel oil compelled the industry to search for alternative fuels, and biomass in general and rice husks in particular were considered a suitable candidate, given their low price some 15 years ago Chhattisgarh state being called as the bowl of rice has a very good option of rice husk to use as a fuel for power plants which incidentally is becoming a one of the major energy sources from the agro-industrial sector. Rice husk is considered to be an environmentally friendly fuel because it can mitigate CO2 SO2 and NOx emissions when compared with conventional fuel. Rice is cultivated in most part of the Chhattisgarh state which accounts for an appreciably high percentage by weight of rice it comes from rice milling process as a by-product. As compared to rest parts of India approximately 20 million tones of paddy is produced in India. This gives around 24 million tones of rice husk and 4.4 million tones of Rice Husk Ash every year. Major three uses of Rice Husk Ash are in the steel, cement and refractory bricks industry. Generally, a large amount of rice husk is dumped as waste which results in waste disposal problem and methane emission on decomposition. The use of rice husk for electricity generation in efficient manner in Chhattisgarh is likely to transform this agricultural by product or waste into a valuable fuel for industries and thus might help in boosting the farm economy and rural development of this newly developed state. In fact a systematic approach to this material can give birth to a new industrial sector of rice husk power production in India.

SUITABILITY OF TYRE PYROLYSIS OIL (TPO) AS AN ALTERNATIVE FUEL FOR INTERNAL COMBUSTION ENGINE

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/61-65

 

Authors: Bhatt Prathmesh M*, Patel Paresh D

ABSTRACT
Increasing industrialization and motorization has lead to a significant rise in demand of petroleum products. As these are the nonrenewable resources it is difficult to predict availability of these resources in future, resulting in uncertainty in its supply and price and is impacting growing economies like India importing 80% of the total demand of the petroleum products. Many attempts have been made by different researchers to find out alternate fuels for Internal Combustion engines. Many alternate fuels like Biodiesel, LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas) and Alcohols are being used nowadays by different vehicles. In this context pyrolysis of scrap tyres can be used effectively to produce oil, thereby solving the problem of waste tyre disposal. In this study pyrolysis of scrap truck tyres were carried out in controlled atmosphere in Rotary bed horizontal batch reactor of 5T capacity at a temperature of 430o C to produce pyrolytic oil, Non condensable gases, steel wires and char. The liquid obtained is characterized for various fuel properties and compared with that of similar properties of standard Euro IV diesel sample to find out its suitability as an alternative fuel for Internal Combustion Engine. The results showed that tyre oil has fuel properties like Calorific value, carbon, hydrogen, Nitrogen, sediment and water content comparable to that of diesel fuel but viscosity, sulphur content and aromatic contents are higher than diesel fuel.

A REVIEW ON NUMERICAL AND EXPERIMENTAL STUDY OF SCREW CONVEYOR

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/66-69

 

Authors: Jigar Patel, Sumant Patel, Snehal Patel

ABSTRACT
Screw (Auger) conveyors are widely used for transporting and/or elevating particulates at controlled and steady rates. They are used in many bulk material applications in industries ranging from industrial minerals, agriculture, chemicals, pigments, plastics, cement, sand, salt and food processing. They are also used for metering (measuring the flow rate) from storage bins and adding small controlled amounts of trace materials such as pigments to granular materials or powders. Many studies on screw conveyors were conducted to examine performance and to develop new types [1]. Most of these studies were experimental in nature. The purpose of this paper is to present a critical review of current explanations on the working concept of a screw conveyor. Although many experimental and numerical studies on the screw conveyor have been made. In this paper, design and analysis of screw conveyor for different material is discussed. Some researcher used a DEM method to predict the performance of screw conveyor is also discussed. This discussion will be helpful for future research.

PERFORMANCE AND EMISSION IMPROVEMENTS OF 4-STROKE MULTI- CYLINDER CI-ENGINE BY USE OF DMC-EGM-DIESEL BLENDS

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/70-73

 

Authors: Simit B. Prajapati, Pravin P. Rathod, Nikul K. Patel

ABSTRACT
Dimethyl carbonate (DMC) and ethylene glycol monoacetate (EGM) are two hopeful alternative fuels as well as fuel additives to improve performance and emissions in CI engine, due to their high oxygen content. This paper presents an experimental study on their effects on the performance and emissions characteristics of CI engine. Test results show that brake thermal efficiency for the DMCEGM05 blends is higher than that of diesel blend while in the case of DMCEGM10 and DMCEGM15 blends it is lower. BSEC of DMCEGM-diesel blends show decreasing trend for increasing brake power or load. As engine load raises the values of EGT increase. Maximum EGT is measured at full load conditions for all blends. CO emissions can be remarkably reduced with the addition of DMC and EGM to diesel. Minimum CO is found for DMCEGM10 fuel. The blends of diesel with 10% DMC and EGM by volume is the best fraction for reduction of smoke and CO emissions. The obtained results show that the fuel which effectively reduces the CO emissions is less effective in reducing the NOx emissions. All these results indicate the potential of the DMC-EGM-diesel blends for clean combustion in diesel engine. The blends of diesel with 15% DMC and EGM by volume is the best fraction for reduction of smoke and CO emissions.

SECURITY IN MOBILE AGENT COMMUNICATION

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/74-80

 

Authors: Pooja Pai, Prof. S.K. Shinde, Prof. A.R. Khachane

ABSTRACT
Mobile agents paradigm has captured researchers’ and industry’s interests long time ago because of its innovative capabilities and attractive applications. The ability of mobile agents is to autonomously migrate from host to host, transferring their code and internal state, enables them to accomplish tasks in network and distributed environments more conveniently, robustly, and efficiently than traditional client-server applications. But, in spite of significant benefits of the mobile agent paradigm, the technology is still mainly in a research domain and so far it has not been adopted on a large scale by the industry and users. One of the reasons for this is security concerns. In this paper, the various security issues in Mobile Agent systems and approaches used to overcome them are examined.

EVALUATION OF HEAVY METAL CONTAMINATION IN ROAD DUST FALLOUT OF BHILAI CITY

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/81-83

 

Authors: Balram Ambade, Litrupa

ABSTRACT
In the present research paper focus on Heavy metal (HM) toxicity in the road dust urban industrial environment of Bhilai city. HM is one of major environmental concern due to its toxicological nature. The anthropogenic emission of HM is 100 times higher than natural emissions. Road dust is of the major source of HM. This study expansions the collection of road dust sample from the Bhilai Steel Plant (BSP). The sum total of HM concentrations in the road dust (n=47) ranged arithmetic means of As, Hg, Co, Cr, Cu, Mn, Ni, Pb, and Zn are 18.4,2.1,14.3,121.5,126.4, 708.5,45.3, 534.6 and 813.2 mg/kg, respectively. Results indicate the metal concentrations in road dust were generally higher Zn>Mn>Pb>Cu>Cr>As>Co>Hg

EXPERIMENTAL INVESTIGATION ON BEHAVIOUR OF CONCRETE WITH THE USE OF GRANITE FINES

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/84-87

 

Authors: Divakar. Y, Manjunath. S and Dr. M.U. Aswath

ABSTRACT
Granite fines which are the byproduct produced in granite factories while cutting huge granite rocks to the desired shapes. While cutting the granite rocks, the powder produced is carried by the water and this water is stored in tanks. After evaporation of water the granite dust remained is transported and disposed on the lands. Disposing this granite fines is a major problem in an Urban set up. Factories are situated close to the residential areas that in case random disposal of the granite fines would lead to health hazards of the people dwelling in the areas in particular and also would prove to be an environmental hazard in general. With the properties of the granite fines, i.e., its size and fineness, it can be very effectively used as a filler material in the concrete, replacing the fine aggregate which will help in filling up the pores in the concrete which is otherwise porous. Filling up of the pores by the granite fines increase the strength of the concrete and also a material which is abundantly available and which has a disposal problem can be made use effectively. In this paper an attempt is made experimentally to investigate the Strength Behavior of Concrete with the use of Granite Fines as an additive. Concrete is prepared with granite fines as a replacement of fine aggregate in 5 different proportions namely 5%, 15%, 25%, 35% and 50% and various tests such as compressive strength, Split tensile strength and Flexural strength are investigated and these values are compared with the conventional concrete without granite fines.

3

DESIGN AND ANALYSIS OF CRANKSHAFT FOR SINGLE CYLINDER 4-STROKE DEISEL ENGINE

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/88-90

 

Authors: Jaimin Brahmbhatt, Prof. Abhishek choubey

ABSTRACT
Crankshaft is one of the critical components for the effective and precise working of the internal combustion engine. In this paper a dynamic simulation is conducted on a crankshaft from a single cylinder 4- stroke diesel engine. A three-dimension model of diesel engine crankshaft is created using SOLID WORKS software. Finite element analysis (FEA) is performed to obtain the variation of stress magnitude at critical locations of crankshaft. Simulation inputs are taken from the engine specification chart. The dynamic analysis is done using FEA Software ANSYS which resulted in the load spectrum applied to crank pin bearing. This load is applied to the FE model in ANSYS, and boundary conditions are applied according to the engine mounting conditions. The analysis is done for finding critical location in crankshaft. Stress variation over the engine cycle and the effect of torsion and bending load in the analysis are investigated. Von-mises stress is calculated using theoretically and FEA software ANSYS. The relationship between the frequency and the vibration modal is explained by the modal and harmonic analysis of crankshaft using FEA software ANSYS.

DATA EXTRACTION FROM DYNAMIC WEB PAGES BASED ON VISUAL FEATURES

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/91-94

 

Authors: Prof. Sachin Bojewar, Prof.Varsha Bhosale, Shuveta Chanchlani

 

ABSTRACT
Search engine returned web page contains result in response to user query. Such a result page can contain data irrelevant to query. In this paper, we try to explore the solution for extraction of dynamic content of web page based on visual features of a page. The visual information of Web pages used in this paper includes information related to Web page layout (location and size) and font. Extracting data from dynamic web page is difficult task because of the structure of web page. Several solutions have been proposed to solve the problem but they also have some limitations because they are web page programming language dependent. In this paper, we will explore the existing solutions and vision based approach for data extraction.

INTERFERENCE BETWEEN ADJACENT FOOTINGS ON SAND

IJAERS/Vol. I / Issue IV/July-Sept., 2012/95-98

 

Authors: E. Saibaba Reddy*, Sina Borzooei, G. V. Narasimha Reddy

 

ABSTRACT
This paper presents the results of series of model tests in which two adjacently placed rough-placed footing resting on sand were loaded simultaneously in order to study the effect of footing size and spacing on the load settlement and failure behavior. In this investigation three square footing of sizes 80mm, 100mm, and 120mm and three circular footings of diameters 80mm, 100mm and 120mm were used. Pair of each size and shape of footings was loaded simultaneously. The tests were conducted with center to center spacing between the footing as B, 3B, 5B and 6B for square footing and D, 3D, 5D and 6D for circular footings. Load-settlement observations were made for each test. Results from test using both square and circular footings are presented. The experimental results obtained from the model tests described in this paper indicated that, the proximity of footings founded on sand enhances of foundations both in terms of settlement and ultimate bearing capacity. The interference effect is negligible when the spacing between the footings is greater than six times the footing size.

ANALYSIS OF TWISTED TAPE WITH STRAIGHT WINGLETS TO IMPROVE THE THERMO-HYDRAULIC PERFORMANCE OF TUBE IN TUBE HEAT EXCHANGER

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/99-103

 

Authors: Mr.S.D.Patil, Prof. A.M. Patil , Prof. Gutam S. Kamble

 

ABSTRACT
Experimental investigation of heat transfer and friction factor characteristics in a double pipe heat exchanger fitted with Straight delta winglet and typical twisted tape elements were studied. The inner and outer diameters of the inner tube are 20.5 and 26 mm, respectively and cold and hot water were used as working fluids in shell side and tube side. The twisted tapes were made of the Aluminum strip with thickness of 2.01 mm and the length of 1500 mm. They were inserted in the test tube section in two different cases: (1) Straight delta winglets twisted tape at different twisted ratios (y/w=3.5, 4.5 and 5.5) and depth of cut ratios (d/w=0.1, 0.2 and 0.3), and (2) typical twisted tape with twist ratios (y/w=3.5, 4.5 and 5.5). The results, obtained from the tube with straight delta twisted tape insert, were compared with those typical twisted tape. The results show that the heat transfer coefficient increased with decrease in twist ratio (y/w). Whereas the increase in the depth of cut ratio (d/w) would improve both the heat transfer coefficient and friction factor. The results from each case were correlated for Nusselt number and friction factor. Subsequently, the predicted Nusselt number and friction factor from the correlations were plotted to compare with the experimental data. It was found that Nusselt number was within ±20% and ±15% for friction factor.

HOW TO DEVELOP DATA WAREHOUSE ARCHITECTURE

IJAERS/Vol. I / Issue IV/July-Sept., 2012/104-105

 

Authors: Sweety Patel, Krunal Pancholi

 

ABSTRACT
Data Warehouse Architecture is description of the events and services of the data warehouse that shows how the component will fit to gather and how system will grow overtime. There are two types of support about mention criteria ad-hoc architecture and planed architecture but experience shows planed architecture has better chance of success. Architecture is contained by every data warehouse. Many data warehouse is implemented without future plan and therefore it has several limits to become as flexible data warehouse for upcoming critical criteria without architecture it is hard to find out area where all upcoming critical factors can seat with data warehouse structure and it is also difficult to manage and change it. As it is not seemed as important to develop architecture for require data warehouse but it is most important framework to make production system succeed.

HOW TO MANAGE CURRENT AND HISTORICAL INFORMATION WITHIN DATA WAREHOUSE?

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/106-108

 

Authors: Sweety Patel

 

ABSTRACT
Many companies use a data warehouse successfully for storing their historical data to the data warehouse than a database. As database is going to be used for the store operational data rather than using a data warehouse. So, in the data warehouse also how the data is going to be managed for the current and historical data is also a complex problem. Many times the past historical data is required to make out a decision on the particular point of view and that’s why to manage a historical as well as current data in to the database is much more important.

FRACTAL IMAGE COMPRESSION USING GRAPHICS HARDWARE

IJAERS/Vol. I / Issue IV/July-Sept., 2012/109-112

 

Authors: Rashmikant A Madaliya, Rajesh Kumar Rai

 

ABSTRACT
In this paper, we present a parallel fractal image compression using the programmable graphics hardware. The main problem of fractal compression is the very high computing time needed to encode images. Our implementation exploits SIMD architecture and inherent parallelism of recently graphic boards to speed-up baseline approach of fractal encoding. The results we present are achieved on cheap and widely available graphics boards.

RELATION BETWEEN SPUR SPACING AND SAFETY MARGIN OF PROTECTED BANK: A FIELD VERIFICATION

 

IJAERS/Vol. I / Issue IV/July-Sept., 2012/113-1

 

Authors: Pramod B. F, Ravindra A. Oak

 

ABSTRACT
The continuously changing course of rivers is a common feature of the rivers. This tendency poses many problems for agricultural land, the habitation, hydraulic structures etc located on the river banks. River training and anti-erosion work therefore becomes essential part of the utilization of river. River training is also required for stabilization of the river channel along the desired alignment. Spur is a river training structure widely used in anti erosion structures. Length and spacing of spurs are the two very sensitive factors that influence the satisfactory performance of river training works. The length and spacing of spurs depends basically on the purpose, river characteristics, cost of construction and maintenance, etc.
As normal practice / thumb rule, α (α = Spacing of spur / Length of Spur) of 2.5 to 5.0 is adopted for bank Protection. This paper attempts to verify theses general guidelines by conducting graphical analysis and study of spurs constructed in the field. The analysis indicated that the ratio (α) is normally the same that of the thumb rule. However, safety margin to the protected bank between the spurs shows wide variations.