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

  -An Open Access Peer Reviewed e-Journal

 

 
 

 

PERFORMANCE IMPROVEMENT OF CENTRIFUGAL FAN BY USING CFD

IJAERS/Vol. II / Issue II/Jan.-March, 2013/01-04

Authors: Keyur K. Patel, Prajesh M. Patel
 

ABSTRACT
The flow in centrifugal fan is highly complex with taking place on the impeller. The centrifugal fan simulated using computational fluid dynamic (CFD) approach. Flow in centrifugal impeller is simulated by navier-stokes eq. and performance curved are obtained. As a first step, an experimental setup was developed and prototypes of fans were made to carry out measurements of flow and next, a computational fluid dynamics (CFD) model was developed for the above setup and the results are validated with the experimental measurement. Fine mesh is generated for impeller blade zone to capture the complex flow behaviour inside blades and mesh independency test is carried out for whole computational domain. The MRF (moving reference frame) applied in the CFD analysis of centrifugal fan as a rotating region around the impeller and component of the impeller stationary. Now, performance curved is obtained under the different variable inlet parameter like volume flow rate, rotational speed, flow coefficient and efficiency. The parameter considered is number of blade, inlet and outlet angle, diameter ratio. It observed that number of blade increase, so that reduce in flow passage and more enlarged flow developed. Finally, the result of this numerical analysis to improved the performance of the centrifugal fan.

 

REVIEW ON PERFORMANCE AND EMISSION CHARACTERISTICS OF DIESEL ENGINE FUEL BLENDED WITH LINSEED OIL AND DIESEL

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/05-07

  Authors: Mr. Kanji D. Dodiya, Prof. Gaurav P. Rathod
 

ABSTRACT
n this paper, we would like to review the use of vegetable oils as a blended fuel for diesel engines. The vegetable oil causes some problems due to their high viscosity compared with conventional diesel fuel. Various techniques and methods are used to solve the problems of high viscosity. One of these techniques is fuel blending. Different vegetable oils used in blending like crude palm oil, jatropha oil, hazelnut oil, mahua oil, linseed oil etc. are blended with diesel fuel in constant speed single cylinder diesel engine and showing its effects on performance and emission characteristic of diesel engine. The vegetable oil blended in varying proportion like 10%, 20%, and 30% with diesel fuel in the CI engine and finds the most preferable combination of the blend for diesel engine.

 

TECHNO-ECONOMICAL VIABILITY OF INTEGRATED BENEFICIATION WITH PELLET PLANT FITTING TO DRI TECHNOLOGY - A MODEL FOR FUTURE ECONOMICS

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/08-10

Authors: Varsha Chaurasia, Piyush Kant Pandey, Ranjan Haldar
 

ABSTRACT
Steel revolution in India started with the resurgence of innumerable medium scaled steel industries and sponge iron units. These low budgeted iron and steel sector always aimed at cost reduction. In this context this paper is prepared keeping in view the survival of medium and small scale (50-150 TPD) DRI Plants. Pelletization Technology on small and medium scale is still under development for Hematite / magnetite ore in Indian situation. Iron ore Pelletization has been identified as an alternative substitute for steel making process especially for DRI. Due to the shortage of good quality lumps / ore fines alternative technology on the basis of low graded iron feed (available from various mining and ore preparation sources) beneficiation is a good agreement. In present scenario beneficiation is an independent important area economically viable with Pelletization [1].
A techno – economical feasibility study is being planned for making the above possible. It is proposed that initially certain laboratory studies would be needed to find out actual benefits.

  VARIATIONAL HOMOTOPY PERTURBATION METHOD FOR SOLVING NONLINEAR REACTION-DIFFUSION-CONVECTION PROBLEMS
 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/11-14

  Authors: Amruta Daga ,V. H. Pradhan
 

ABSTRACT
In this paper, we apply the Variational Homotopy Perturbation Method (VHPM) using He’s polynomials for finding the analytical solution of Nonlinear Reaction-Diffusion-Convection Problems which is presented to show the application of the present technique. Variational Homotopy Perturbation Method is combination of variational iteration method and homotopy perturbation method. The present method perform extremely well in terms of efficiency and simplicity.

 

CFD ANALYSIS OF MIXED FLOW PUMP IMPELLER

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/15-19

  Authors: Mehul P. Mehta, Prajesh M. Patel
 

ABSTRACT
To improve the efficiency of mixed flow pump, computational fluid dynamics (CFD) analysis is one of the advanced tools used in the pump industry. From the CFD analysis, the velocity and pressure in the outlet of the impeller is predicted. These outlet flow conditions are used to calculate the efficiency of the impeller. The optimum inlet and outlet vane angles are calculate for the existing impeller by using the empirical relations. In the first case outlet angle is increase, and second case inlet angle is decrease obtain from the CFD analysis, it is reduce outlet recirculation or it is increase outlet recirculation flow cause to improve efficiency. Thought that the calculation results by numerically simulation software Fluent can truly reflect the flow in the impeller of a mixed flow pump on the premise that the turbulent model and boundary conditions are similar to the actual situations.[1] By change the outlet angle the head of the impeller is improve. Finally, from CFD analysis the calculated efficiency of the impeller with optimum vane angle can be improved by changing the inlet and outlet angle. The Head created by this analysis would be higher.

 

DESIGN OF SOLAR WATER COOLER USING AQUA-AMMONIA ABSORPTION REFRIGERATION SYSTEM

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/20-24

  Authors: R Sai Lavanya, Dr. B.S.R. Murthy
 

ABSTRACT
Solar energy is one of the most well known green sources of energy. Solar absorption refrigeration systems Increasingly attract research interests.
S.A. Kalogirou and G.A. Florides, 2002 have simulated a Li-Br absorption solar cooling system using TRNSYS simulation package over a typical meteorological year for a hot climate. The system considered employees a compound parabolic collector 15m² in area sloped at 30° and a storage tank of 600 lit. They concluded that the annual load of a typical house can be met to replace about 9000 kWh with solar energy collected. In order to economically viable by mass producing absorption system.
Present work in paper is to design a solar water cooler of 200 lit capacity. To cater the needs of cool water requirements in an educational institution, office, hotel or guest houses.
In aqua ammonia absorption systems we use ammonia as the refrigerant and water as the absorbent. In such systems, ammonia is boiled out of the water then condensed in an outdoor coil. The refrigerant is then expanded and evaporates in the evaporator at low pressure, producing the cooling effect. The ammonia is then reabsorbed into the water

 

ROBUST SHADOW DETECTION AND OPTIMUM REMOVAL OF SHADOW IN VIDEO SEQUENCES

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/25-28

  Authors: Mrs. S. A. Lakhotiya, Prof. Mrs. M. D. Ingole
 

ABSTRACT
The main objective of this paper is to develop multiple human objects tracking approach based on motion estimation and detection, background subtraction, shadow removal and occlusion detection. A reference frame is initially used and considered as background information. While a new object enters into the frame, the foreground information and background information are identified using the reference frame as background model. Most of the times, the shadow of the background information is merged with the foreground object and makes the tracking process a complex one. In the approach, morphological operations are used for identifying and removed the shadow. The occlusion is one of the most common events in object tracking and object centroid of each object is used for detecting the occlusion and identifying each object separately. Video sequences have been captured in the laboratory and tested with the proposed algorithm. The algorithm works efficiently in the event of occlusion in the video sequences.

 

SYNTHESIS OF LOW COST ADSORBENT FROM AZADIRACHTA INDICA (NEEM) LEAF POWDER

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/29-31

  Authors: Ghanshyam Pandhare, Nikhilesh Trivedi, Nitin Kanse, S.D.Dawande
 

ABSTRACT
The adsorption technique is effective and economical to application level. The regular commercial activated carbon is expensive, so there is a need of alternatives for such application. In present study Neem leaves powder activated carbon has developed as an adsorbent.
In the textile industry, the activities involving dyeing generate pollutants due to the discharge of toxic effluents, originating from the byproducts generated. If not treated properly before being discharged into natural water bodies, the effluent from this industry may reach potable water resources, causing serious ecological concern. Therefore the development of new technologies for the removal of color from waste water is necessary.
The aim of this work is to study the color removal by Neem Leaves Powder from methyl red & K2Cr2O7 solution and to offer this biosorbent as local replacement for existing commercial adsorbent materials.

 

COMPARATIVE STUDY APPROACH FOR MIMO-OFDM USING SPATIAL MULTIPLEXING TECHNIQUES

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/32-35

  Authors: Hiral Patel, Dr Minal Saxena, Aniruddh Amin
 

ABSTRACT
Multiple Input Multiple Output (MIMO) systems have recently emerged as a key technology in wireless communication systems for increasing both data rates and system performance. There are many schemes that can be applied to MIMO systems such as space time block codes, space time trellis codes, and the Vertical Bell Labs Space-Time Architecture (V-BLAST). This paper proposes a novel signal detector scheme called MIMO detectors to enhance the performance in MIMO channels. , we study the general MIMO system, the general V-BLAST architecture with Maximum Likelihood (ML), Zero- Forcing (ZF), Minimum Mean-Square Error (MMSE), and Ordered Successive Interference Cancellation (SIC ) [7] [15]detectors and simulate this structure in Rayleigh fading channel. Also compares the performances of MIMO system with different modulation techniques in Fading and AWGN channels. Base on frame error rates and bit error rates, we compare the performance and the computational complexity of these schemes with other existence model. Simulations shown that V-BLAST implements a detection technique, i.e. SIC receiver, based on ZF or MMSE combined with symbol cancellation and optimal ordering to improve the performance with lower complexity, although ML receiver appears to have the best SER performance-BLAST achieves symbol error rates close to the ML scheme while retaining the low-complexity nature of the V-BLAST.

 

COMPARATIVE EVALUATION OF BIODEGRADABILITY OF YARDWASTE AND FRUITWASTE WITH INDUSTRIAL EFFLUENTS BY VERMICOMPOSTING

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/36-39

  Authors: Dr. B. Hemalatha
 

ABSTRACT
An experiment was conducted to prepare vermicompost using partially decomposed fruit waste and yard waste by employing indigenous earthworm species. The earthworms used were Eudrillus euginea. This study was executed under both control (Wastewater and sufficient conditions (Dairy, Distillery).
This process was carried out with the use of, raw dairy and distillery effluents and waste to provide the necessary moisture for the wastes. This process was done under the controlled conditions of pH, moisture content and temperature.
In this process partially decomposed fruit and yard waste were broken down and fragmented rapidly by earthworms resulting in a stable non-toxic material with good structure which has a potentially high economic value as soil conditioner for plant growth. Within 40 days, the castings obtained on the top surface were collected, sieved, dried, tested and used as manure, The results reveal the increased nutrient content, increased worm population and decreased processing days of the waste in the order of dairy, distillery and water.

  A DYNAMIC KEY FOR HIGH-SPEED CHAOTIC OPTICAL COMMUNICATION
 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/40-45

  Authors: Saha Panthadeb, Sarkar Anindita
 

ABSTRACT
Here we have proposed a external optical feedback semiconductor laser based cryptographic system (for digital data transmission) in which the external optical feedback path length is set as the dynamic key of the system which is message dependent and hence time varying also. This makes the system more secure and reliable compared to other existing encryption systems.

  VOICE RECOGNITION USING FUZZY LOGIC
 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/46-47

  Authors: Mr. Biraj Patel and Dr. Dipti Shah
 

ABSTRACT
Several methods may be employed for voice comparison and identification. This paper presents a method for voice comparison and identification to identify unknown person using fuzzy logic.

 

CONCEPTUAL MODEL TO PREDICT THE MASS TRANSFER ACTIVITIES ON EARTH’S CRUST

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/48-52

  Authors: Hanna Paulose, Manu Prakash, Mathews Mathews, Saji C.B
 

ABSTRACT
Previous researches have recognized the influence of industrialization, deforestation, exhaust gas emissions, ozone layer depletion and induced global warming on environmental and climatic changes. However studies on the climatic variation due to large scale construction activities on earth’s crust are scarce. This paper pioneers the investigation on the response of planet earth to human-induced mass imbalance on its crust and its impact on the environment and the climate. The climate pattern and weather seasons on earth are strongly related to the speed and axis of rotation of earth. Large scale construction activities, such as mining, construction of dams, leveling of mountains etc. involve enormous amount of mass being transferred across the earth’s surface, leading to considerable mass imbalance on earth’s crust.
Since earth is modeled as a solid body rotating on its axis and also on an elliptical path around the sun, such imbalances can result in phenomena such as wobbling of earth on its axis and changes in its trajectory, subsequently distorting the climate system. This investigation is intended to analyze the distortion in mass distribution on earth’s surface and its effect on the sustainability of the earth and the climate system. The research also identifies the measures to be taken to prevent the detrimental effects that may cause to the ecosystem, due to human induced mass redistribution on earth’s crust.

 

PARAMETRIC OPTIMIZATION OF PROCESS PARAMETER FOR ROLLER BURNISHING PROCESS: A REVIEW

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/53-56

  Authors: Nikunj K Patel, Mr Kiran A Patel
 

ABSTRACT
In the present paper a review of Parametric Optimization of Process Parameter for Roller Burnishing Process. A roller burnishing tool is used to perform roller burnishing process under different parameters. There are so many parameters which can be optimized for better performance of surface roughness and surface hardness. It has been used to impart certain physical and mechanical properties, such as friction, corrosion, wear and fatigue resistance. Roller burnishing is an economical process, where skilled operators are not required. The present paper is a review of the different techniques used in the recent past.

 

REVIEW OF SOLAR ABSORPTION REFRIGERATION SYSTEM USING LiBr-WATER AND SIMULATE THE PERFORMANCE OF THE SYSTEM

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/57-60

  Authors: Tarik Shaikh, Prof. Yogesh J. Morabiya
 

ABSTRACT
Consistently increasing CO2 emission and ozone depletion from CFC’s are serious environmental issues challenging scientific community. The dependence on fossil fuels has to be reduced and alternative environmental friendly options need to be explored. In this aspect, vapour absorption system gives scope of utilizing low grade energy source i.e. solar panel for generating cooling effect which is dominated by high grade energy driven compression technology. The Li-Br aqueous solution based absorption cycle consists of four stages: generation, condensation, evaporation and absorption with ideally no moving part. Absorption refrigeration system provides large potential for reducing heat pollution of the environment. This paper describes simple absorption refrigeration system using Li-Br / H2O as a working pair. The simulation of the system was carried out using Engineering Equations Solver. Results of simulated performance of this system and the effects of the refrigeration load inlet temperature on the coefficient of performance, COP of the system are given. The performance of the system increased with increasing initial temperature of the cooling load. The effects of changing refrigeration load inlet temperature have been investigated and shown.

  ENVIRONMENTAL STUDY OF PMGSY ROAD
 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/61-62

  Authors: Virendra Shankar Sahu & Santosh K. Sar
 

ABSTRACT
India has about 5.89 lac village. About 75% of its population resides, in these villages. Most of the villagers have lack of basic amenities like education medical assistance, banking, recreational earthen employment, inward transport of agricultural inputs and consumer goods, outward transportation of their agricultural produce etc. This ensures rural population to live below poverty line. They remain away from main stream of Development, as a result rural population comes to towns, cities etc. Which creates law and order problems in the urban areas?
Since ancient times Indian society consisted of self-sufficient villages. In those days villager did not depend on other town for their daily needs. Each village produces their own food, clothing, had all the required tradesman right in the village itself. Over the centuries many princes ruled them, who were mainly concerned with land revenue collection from villages. Most of the rural never cared for rural development and upliftment. Post independent the state government were entrusted the responsibility of rural roads. Due to lack of funds the allocation for fund remained meager compared to requirement of villages.

  REVIEW OF THE MECHANICAL BEHAVIOUR OF CORNEA AND ITS IMPLICATIONS ON SURGERY
 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/63-66

  Authors: A. Richhariya, Dr. S. Punjabi and Dr. V. Sangwan
 

ABSTRACT
Biological soft tissue are of special interest to the researchers as they exhibit unique anisotropic behaviour and are leading contributors to the quality of outcome of a surgical procedure. In this paper attempts have been made to review the strategy adopted by various researchers for conducting experiments in order to understand the mechanical behaviour of cornea and their use in ophthalmology. Studies have been conducted for identifying ultra-structure of cornea and their contribution on mechanical properties of the cornea. The other area focused by the researchers is on the deformation of cornea under stress conditions. This analysis is based on the assumption of treating cornea as a homogenous membrane. In the present work various approaches undergone by the researchers have been reviewed in a great detail. As an outcome of this literature review a numerical model has selected to be looked upon in the future since no purposefully research was conducted as of now. Finally it is proposed that by using the structural analysis of cornea a surgical procedure could be generated on the basis of quality of vision developed after the surgery.

 

IMPROVED INTERACTIVE SOLUTION PROCEDURE FOR LINEAR MULTIOBJECTIVE TRANSPORTATION PROBLEM

 

IJAERS/Vol. II / Issue II/Jan.-March, 2013/67-69

  Authors: Samiran Senapati
 

ABSTRACT
The transportation model is a special class of linear programming models, widely used in the area of inventory control, employment scheduling, aggregate planning, and personnel assignment etc. This paper presents an improved interactive algorithm which takes advantage of the multi objective transportation problem. An example is included to illustrate the algorithm and to determine their viability.