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Frequency: 12 issues per year
ISSN: 2250–3005 (online version)
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International Journal of Computational Engineering Research

(IJCER)

 

Articles

 

Research Article  open access
Continuous Wavelet Transform (CWT) based Analysis of Very Fast Transient over Voltages of 132 KV Power Transformer
K.Prakasam, D.Prabhavathi ,Dr.M.Suryakalavathi, Dr.B.Ravindranath Reddy
India
Paper Indexed : :03.3005/0520107
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

This paper results the most accurate results of Very Fast Transient over Voltages of 132 KV transformer caused by the switching operation. A 132KV transformer is designed using MATLAB simulin, the VFTOs generated by the switching operations have been analyzed and are presented. The VFTOs generated due to Disconnector switching operation can cause insulation failure at very high voltage levels. The reasons of these problems are travelling waves which is generated during switching operations in a gas-insulated substation (GIS). Calculation of Very Fast Transient Overvoltage has been carried out using MATLAB7.8 for various switching.

Keywords:disconnect or, High voltage level, MAT LAB, Switching, Switching operations, Travelling Very Fast Transient over voltages, Wavelet transform.

 

Research Article  open access
Wavelet based detection and location of faults in 400kv, 50km Underground Power Cables
D.Prabhavathi, K.Prakasam, Dr.M.Suryakalavathi, Dr.B.Ravindranath Reddy
India
Paper Indexed : : 03.3005/05208015
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

In this paper, a method for detection and location of fault in a power line is presented. This method can be applied for both transmission and distribution power lines of underground cables. The proposed method is capable to determine type of fault the fault location upon its occurrence, based on the data available from the measuring equipment. The algorithm presented uses the fault steady-state data (voltages and currents) and the system parameters, to calculate the fault location. The influence of the fault resistance that depends on the design characteristics of the power line is disregarded. The proposed method has been modeled in mat lab simulink of version 7.8.

Keywords:Cables, distribution, Fault location, Fault diagnosis, steady state, transmission, underground, wavelet,

Research Article  open access
Effect of mainstream air velocity on velocity profile over a rough flat surface
Arunima Singh, A. Kumar, M. Mallick
Rourkela
Paper Indexed : :03.3005/052016019
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

In turbulent flow, the boundary layer is defined as the thin region on the surface of a body in which viscous effects are important. The boundary layer allows the fluid to stick at the surface and thus having the velocity of the surface and to increase towards the mainstream. Roughness is a component of surface texture. It is quantified by the vertical deviations of a real surface from its ideal form. To study the variations of velocity profiles at boundary layer and their influences especially in turbulence zone, the approaches were done

Keywords:Boundary layer, Velocity profile, Turbulence, wind tunnel, laminar zone, turbulent zone, boundary layer parameters, surface roughness

Research Article  open access
Effectiveness of Shear Wall-Frame Structure Subjected to Wind Loading in Multi-Storey Building
Tarun Shrivastava|| Prof. Anubhav Rai|| Prof. Yogesh Kumar Bajpai
Jabalpur
Paper Indexed : :03.3005/052020028
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

This paper represent the shear-wall frame behavior in a multi-storey building subjected to wind loading. The different cases are prepared with different configuration of shear wall. Comparative graphical representation of different models (cases) on the basis of different parameters such as lateral deformation, storey drift index, maximum bending moment and shear forces are also discussed.

Keywords:Multi-storey building, lateral load. lateral deformation, storey drift index, maximum bending moment, maximum shear forces, wind behavior.


Research Article  open access
Skinput: Advance Input Technology
Shaikh Abdur Rehman Mohammed Sadique|| Pragnesh N Shah
Mumbai
Paper Indexed : :03.3005/052029034
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

In this paper we are describing about the new input sensing technology that is skinput. Skin put technology enabled device acts as an input interface. It provides a new input technique based on bio-acoustic sensing that allows the skin to be used as a finger input surface. This also allows the body to be annexed as an input surface without the need for the skin to be invasively instrumented with sensors, tracking markers, or other items.

Keywords:Skin put, Bio-acoustic, Finger, Pico-Projector, Palm, Proprioception.

Research Article  open access
A Study Of Activation Parameters For Viscous Flow Process Of Tetrabutyl Ammonium Iodide In Binary Mixture Of N,N-Dimethylformamide And Ethylmethylketone At Different Temperatures.
Baljeet Singh Patial
India
Paper Indexed : :03.3005/052035038
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

Viscosities and densities of tetrabutylammonium iodide (Bu4NI) in N,N-Dimethylformamide (DMF), ethylmethyl ketone (EMK) and DMF + EMK solvent mixtures containing 0, 20, 40, 60, 80 and 100 mol % of DMF at 298, 308 and 318K have been reported. The viscosity data have been analysed in terms A- and B- viscosity coefficients of the Jones Dole equation. Both A- and B coefficients have found to be positive over the entire solvent composition range at all temperatures. Partial molal volumes () have also been calculated which have been used along with B- values to calculate the activation parameters for viscous flow process electrolytic solution. The activation parameters have been examined as a function of solvent composition to interpret the solution behaviour of tetraethyl ammonium bromide (Bu4NI) in binary mixture of DMF-EMK. The behaviuor of these suggests strong ion-solvent interactions in these systems and that Bu4NI act as structure-maker in EMK+DMF mixed solvents.

Keywords:Boundary layer, Velocity profile, Turbulence, wind tunnel, laminar zone, turbulent zone, boundary layer parameters, surface roughness

Research Article  open access
Optimized Compressive Strength Modeling of Mixed Aggregate in Solid Sandcrete Production
P.N. Onuamah
Nigeria
Paper Indexed : :03.3005/052039052
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

The paper presents the report of an investigation into the model development and optimization of the compressive strength of 60/40 sand/quarry dust solid sandcrete block. Quarry dust is a massive waste in quarry sites and can be combined with sand at studied ratios. The study applies the Scheffe's optimization approach to obtain a mathematical model of the form f(xi1,xi2,xi3,,xi4), where xi are proportions of the concrete components, viz: cement, sand, quarry dust and water. Scheffe's experimental design techniques are followed to mould various solid block samples measuring 450mm x 225mm x 150mm and tested for 28 days strength. The task involved experimentation and design, applying the second order polynomial characterization process of the simplex lattice method. The model adequacy is checked using the control factors. Finally a software is prepared to handle the design computation process to take the desired property of the mix, and generate the optimal mix ratios.

Keywords:Sandcrete, Pseudo-component, Simplex-lattice, Optimization, binary Mixtures

Research Article  open access
Character recognition of Devanagari characters using Artificial Neural Network
Richa Patil|| Varunakshi Bhojane
India
Paper Indexed : :03.3005/052053056
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

In this paper we have presented a novel approach for recognizing the handwritten characters in Devanagari script .This paper describes the method and different techniques used for handwritten character recognition system for Devanagari script .In second stage we extract features of the characters into consideration like types of spine ,intersection points ,directional changes and shirolekha .we have used neural network as a classifier which takes the extracted features as input . The proposed algorithm uses the scripting properties the recognition rate achieved with this technique is 80%.

Keywords:data collection, extracting feature, image normalization, neural network, Segmentation.








 

Articles

 

Research Article  open access
Impact of Using RHA and CD in Replacement of Cement for Mix
Dr.A.S.Kanagalakshmi|| J.Caroline Saro|| V.Jayashree
India
Paper Indexed : :03.3005/052201010
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

The introduction of sustainable development to overcome issues of natural resource depletion has been gaining increased attention. The major objective of this study is to address the potential use of both agricultural and industrial wastes namely RHA (Rice Husk Ash) and CD (Copper Dust) as raw material in production of concrete. This study is an experimental investigation performed on replacement of copper dust and rice husk in cement concrete. It enhances the mechanical properties of concrete cube subjected to split tensile test and compressive strength test .This study provides comparison between the performance of using copper dust and rice husk cement concrete, as a strengthening material of concrete cube. The samples were tested and proved its promising results which were found to be increased compressive strength upto 25% and increased split tensile strength upto 40%.

Keywords:CD, RHA, mix design, compressive strength, split tensile strength, electrical resistivity.

 

Research Article  open access
Performance Analysis of Ad-hoc on Demand Distance Vector Routing (AODV) and Dynamic Source Routing (DSR) routing Protocols for Mobile Ad-hoc Networks
Bhushan Ramesh Ratnaparakhi|| Prof. Ranjana R. Gite|| Prof. Dattatray S. Babe
India
Paper Indexed : : 03.3005/0522011021
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

Now a day Mobile Ad hoc Networks (MANETs) are a new generation of networks offering unrestricted mobility without any underlying infrastructure. This MANETs research program has mainly focused on developing an efficient routing mechanism in such a highly dynamic and resource constrained network [1]. Most of these routing protocols assume a trusted, safe and cooperative environment. This performance analysis project work is related to various Mobile Ad hoc Networks (MANETs) routing protocols such as Ad-hoc on Demand Distance Vector Routing (AODV), Dynamic Source Routing (DSR), and Optimized Link State Routing (OLSR) [1-4]. On the bases of different routing protocols as mention earlier we can stimulate using network simulator software which generates different graphs as result. And then see Comparative analysis effects on routing protocol parameters as based on graph of Mobile Ad-hoc Networks (MANETs) on the bases of various simulation environments such as area, number of node, testing field, traffic load etc. Following parameters are considered for performance analysis Routing Overhead, End-to-End Delay and Throughput. The proposed work analyses various performance parameter of the routing protocols and suggesting which method is superior among them and study graphs obtain in Network stimulating software (NS-2) for Mobile Ad-hoc Networks (MANETs). In this paper we took Ad-hoc on Demand Distance Vector Routing (AODV) and Dynamic Source Routing (DSR) protocol, this two routing protocols simulate for same network area parameter in NS-2 environment to observe various results and conclude the study on bases of graph which we obtained as a result.

Keywords:Area, AODV, DSR, MANETs, Number of Node, Network Simulator 2 (NS-2), OLSR, Routing Protocols.,

Research Article  open access
Wimax Emulator to Enhance Media and Video Quality
Supriya. L. Shitole|| Prof.Ranjana.R. Gite
India
Paper Indexed : :03.3005/0522022027
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

Worldwide interoperability for Microwave Access (WiMAX) is one amongst the forthcoming generations (4G) promising networks to cover a number of the consumers' desires. It's a promising technology that's supposed to deliver mounted and additional recently, mobile broadband connectivity. It's a forthcoming technology it's primarily supposed to overcome the drawbacks of previous version. It's developed primarily because of the coverage area is larger compare all different networks, high information rates, it's simply deployable and secure Quality of service. WiMax may be a new technology handling provision of information over long distance using wireless communication methodology in many alternative ways that supported. IEEE 802.16 WiMax is claimed as another broadband instead of cable and telephone circuits. Worldwide interoperability for Microwave Access (WiMAX) technology will concentrate on Quality of Service (QoS). Quality of Service is an important parameter to evaluate performance of any Network. During this article, Quality of video is improved using WiMAX emulator. Applications like video and audio streaming, on-line play, video conferencing, voice over IP (VoIP) and File Transfer Protocol (FTP) demand a large range of QOS necessities like bandwidth and delay. IEEE 802.16 normal referred to as WIMAX provides broadband wireless access with QOS requirements. These paper have designed a system using WiMAX and RTP to enhance quality of media and video transmitted over network. These paper are progressing to use NS2 emulator so it will use external packets for simulation. These papers are using Ns2 for showing the complete network completely


Research Article  open access
Anonymous Communication for Providing More Privacy and Security
Satish .K. Hatwar || Prof.Vijay.M. Purohit
India
Paper Indexed : :03.3005/0522028033
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

A peer-to-peer network within which interconnected nodes ("peers") shares resources amongst one another without the utilization of centralized administrative systems. In communication network, the foremost common problems are privacy and security. During this network, anonymity is additionally crucial issue. The foremost anonymity for peer-to-peer users involved with the users' identities and actions which may be discovered by the other members. An intruder will get info regarding the content of the information, the sender's and receiver's identities. There are several approaches proposed to produce anonymous peer-to-peer communications. This paper provides anonymous communication with additional privacy and security. Anonymous approaches are designed with the subsequent 3 goals: to safeguard the identity of provider, to safeguard the identity of requester and to safeguard the contents of transferred information between them. This paper presents a new peer-to-peer approach to realize anonymity between a requester and a provider in peer-to-peer networks with trustworthy servers known as supper node in order that the provider won't be able to determine the requester and no alternative peers will determine the two act parties with certainty. This paper shows that the proposed algorithmic rule improved reliableness and has a lot of security. This algorithmic rule, based on onion routing and organization, protects transferring information against traffic analysis attack. The ultimate goal of this anonymous communications algorithmic rule is to permit a requester to speak with a provider in such a way that no-one will confirm the requester's identity and therefore the content of transferred information.



Research Article  open access
Independent Functions of Euler Totient Cayley Graph
K.J. Sangeetha|| B. Maheswari
India
Paper Indexed : :03.3005/0522034038
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

Graph Theory is the fast growing area of research in Mathematics. The concepts of Number Theory, particularly, the "Theory of Congruence" in Graph Theory, introduced by Nathanson[7], paved the way for the emergence of a new class of graphs, namely, "Arithmetic Graphs". Cayley graphs are another class of graphs associated with the elements of a group. If this group is associated with some arithmetic function then the Cayley graph becomes an Arithmetic graph. The Cayley graph associated with Euler Totient function is called an Euler Totient Cayley graph and in this paper we study the independent Functions of Euler Totient Cayley graphs. This paper is devoted to the study of independent functions of Euler Totient Cayley Graph in two cases when n is prime and when n is nonprime.

Keywords:Euler Totient Cayley Graph, independent set, independent function.

Research Article  open access
An Experimenatl Study on Heat Transfer Behaviors of A Welded - Aluminum Minichannel Heat Exchanger
Thanhtrung Dang|| Thanhnghia Nguyen|| Tronghieu Nguyen
Vietnam
Paper Indexed : :03.3005/0522039045
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

This paper presented an investigation for heat transfer behaviors of a welded-Aluminum minichannel heat exchanger (MNHE) using experimental method. In this study, the results show that the welding Aluminum method for MNHE is less efficiency than the bonding PMMA method at high mass flow rate of water. For water having the inlet temperature of 62C and mass flow rate of 4.1g/s, the heat transfer rate of the welded- Aluminum MNHE is 118W and the heat transfer rate of the bonded-PMMA MNHE is 132W. It is an important key to select a method for design a minichannel heat exchanger

Keywords:Temperature, heat transfer, heat exchanger, minichannel, experimental

Research Article  open access
Application of DRP scheme solving for rotating disk-driven cavity
Reui-Kuo Lin || Shun-Feng Tsai || Kwan Ouyang
China
Paper Indexed : :03.3005/0522046052
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

This paper is to explore when the rotating disk-driven cube container structure flow generated by different Reynolds numbers to observe structural reasons and swirl flow field generated in the space discretization dispersion-relation-preserving (DRP) scheme finite difference method, time item then use total variation diminishing (TVD) Runge-Kutta method format, thereby to achieve the accuracy of its value, the paper also use topological theory to analyze the characteristics of singularity, and draw a three-dimensional flow field pattern thereby to observe the structure and flow of the flow field case, with the result that the Reynolds number increased flow into the spiral point position will gradually close the bottom of the cavity, and with the impact of an increase in the Reynolds number at the bottom of the singular point significantly smaller

Keywords:disk-driven, Reynolds number, dispersion-relation-preserving (DRP), total variation diminishing (TVD), Runge-Kutta, topological theory

Research Article  open access
Optimization of Uniform Fiber Bragg Grating Reflection Spectra for Maximum Reflectivity and Narrow Bandwidth
Nagwan I. Tawfik|| Walid S. Eldeeb|| M. B. El_Mashade|| A. E. Abdelnaiem
Egypt
Paper Indexed : :03.3005/0522053061
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

Fiber Bragg grating has made a big revolution in telecommunication systems. The existence of fiber Bragg grating is needed when an optical fiber amplifier and filter are used. They can be used as band reject filter or band pass filter for optical devices. The design parameters of the fiber Bragg grating affect the output characteristics of it. The purpose of this paper is to simulate and analyze the spectral characteristics of the uniform fiber Bragg grating (FBG) for achieving maximum reflectivity and narrow bandwidth. This can be achieved by studying the effect of the structural parameters of the uniform fiber Bragg grating such as; grating length and refractive index modulation on the reflectivity and spectral bandwidth of the FBG. The simulations are based on the numerical solution of the coupled- mode equations. The effect of changing the refractive index shape is also considered in this analysis. The simulation results show that the reflectivity of FBG will increase when the grating length and the refractive index modulation increase. Besides, the spectral bandwidth will decrease by the increase of grating length. It will also increase when the refractive index modulation increase. This studydeduces that the change of the refractive index shape doesn't have any effect on the spectral response of the uniform FBG.

Keywords:Couple mode theory,Coupling coefficient,Fiber Bragg grating, Photosensitivity,Reflectivity, Refractive index modulation, Spectral bandwidth

Research Article  open access
Open CV Implementation of Object Recognition Using Artificial Neural Networks
Naveen Kumar Anumula || Pradeepa Katta || Madhuri Basa || Durga Prasad Lolla || P.S.Suhasini || P.Venkata Ganapathi
India
Paper Indexed : :03.3005/0522062067
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 02 (February 2015)

Abstract

We present an automatic road sign detection and recognition service system for automatic driving system. Artificial neural networks are models inspired by human nervous system that is capable of learning. One of the important applications of artificial neural network is traffic symbol Recognition. The traffic symbol system has been studies for many years. It is one of the most important research area for enabling vehicle driving assistances. The automatic driving system should be simple in order to detect symbol with high responses. The challenge gets more difficult in order to make system simple while avoiding complex image processing techniques to detect symbol. It uses images taken from the Data base. The propose system consist of three main phases: image segmentation, recognition, and classification.

Keywords:artificial neural networks; object recognition; Open CV; Visual studio; back propagation algorithm.