Kalyani Government Engineering College

www.kgec.edu.in
Kalyani, India

Kalyani Government Engineering College , in Kalyani, West Bengal, India offers undergraduate and postgraduate engineering degree courses under West Bengal University of Technology . The institution is regulated, operated and sponsored by the State Government of West Bengal. KGEC is ranked 69 in all India rankings of Top 100 Engineering College in India in 2012. As per survey conducted by The Telegraph, it is ranked 5th best engineering college in West Bengal which admits through WBJEE.But according to opening and closing ranks in WBJEE, it comes just after Jadavpur University and BESU , Shibpur. It has a strong faculty team with quality previous experience in reputed government technical institutions all over India. Wikipedia.


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Das K.,Kalyani Government Engineering College
International Journal of Heat and Mass Transfer | Year: 2011

This paper studies the effect of first order chemical reaction and thermal radiation on hydromagnetic free convection heat and mass transfer flow of a micropolar fluid via a porous medium bounded by a semi-infinite porous plate with constant heat source in a rotating frame of reference. The plate is assumed to oscillate in time with constant frequency so that the solutions of the boundary layer are the same oscillatory type. The dimensionless governing equations for this investigation are solved analytically using small perturbation approximation. The effect of the various dimensionless parameters entering into the problem on the velocity, temperature and concentration profiles across the boundary layer are investigated through graphs. Also the results of the skin friction coefficient, couple stress coefficient, the rate of heat and mass transfer at the wall are prepared with various values of the parameters. © 2010 Elsevier Ltd. All rights reserved.


Das K.,Kalyani Government Engineering College
Microfluidics and Nanofluidics | Year: 2014

In the present study, the effects of partial slip on mixed convection stagnation point flow and heat transfer of nanofluid impinging normally toward a shrinking sheet are investigated numerically. In particular, focus is on Cu-water and Al2O3-water nanofluids. Similarity transformation technique is adopted to obtain the self-similar ordinary differential equations and then solved numerically using Runge-Kutta-Fehlberg method with shooting technique. A parametric study is performed to explore the effects of various governing parameters on the fluid flow and heat transfer characteristics. Both the cases of assisting and opposing flows are considered. The physical aspects of the problem are highlighted and discussed. © Springer-Verlag Berlin Heidelberg 2013.


Das K.,Kalyani Government Engineering College
International Journal of Heat and Mass Transfer | Year: 2012

This work investigates the effect of thermophoresis and chemical reaction on heat and mass transfer in hydromagnetic micropolar fluid flow over an inclined permeable plate with constant heat flux and nonuniform heat source/sink in the presence of thermal radiation. It is assumed that the transverse magnetic field is a function of the distance from the origin. The analysis accounts for both temperature dependent fluid viscosity and thermal conductivity. Using the similarity transformation, the governing system of equations are transformed into non-linear ordinary differential equations and are solved numerically using symbolic software MATHEMATICA. Numerical results for the velocity, microrotation, temperature and species concentration as well as for the skin friction, heat and mass transfer are obtained and displayed graphically for pertinent parameters to show interesting aspects of the solution. © 2012 Elsevier Ltd. All rights reserved.


Das K.,Kalyani Government Engineering College
Microfluidics and Nanofluidics | Year: 2013

This article concerns with a steady two-dimensional boundary layer flow of an electrically conducting incompressible nanofluid over a stretching sheet in a porous medium with internal heat generation/absorption. The transport model includes the effect of Brownian motion with thermophoresis in the presence of chemical reaction and magnetic field. Lie group analysis is applied to the governing equations. The transformed self similar non-linear ordinary differential equations along with the boundary conditions are solved numerically. The influences of various relevant parameters on the flow field, temperature and nanoparticle volume fraction as well as wall heat flux and wall mass flux are elucidated through graphs and tables. © 2013 Springer-Verlag Berlin Heidelberg.


Das K.,Kalyani Government Engineering College
Heat and Mass Transfer/Waerme- und Stoffuebertragung | Year: 2012

The influence of partial slip, thermal radiation and temperature dependent fluid properties on the hydromagnetic fluid flow and heat transfer over a flat plate with convective surface heat flux at the boundary and nonuniform heat source/sink is studied. The transverse magnetic field is assumed as a function of the distance from the origin. Also it is assumed that the fluid viscosity and the thermal conductivity vary as an inverse function and linear function of temperature respectively. Using the similarity transformation, the governing system of nonlinear partial differential equations are transformed into similarity non-linear ordinary differential equations and are solved numerically using symbolic software MATHEMATICA 7.0. The numerical values obtained within the boundary layer for the dimensionless velocity, temperature, skin friction coefficient and the Nusselt number are presented through graphs and tables for several sets of values of the parameters. The effects of various physical parameters on the flow and heat transfer characteristics are discussed from the physical point of view. © Springer-Verlag 2011.


Das K.,Kalyani Government Engineering College
Alexandria Engineering Journal | Year: 2014

The problem of unsteady MHD free convection flow of nanofluids via a porous medium bounded by a moving vertical semi-infinite permeable flat plate with constant heat source and convective boundary condition in a rotating frame of reference is studied theoretically. The velocity along the plate i.e. slip velocity is assumed to oscillate in time with constant frequency so that the solutions of the boundary layer are the same oscillatory type. The dimensionless governing equations for this investigation are solved analytically using small perturbation approximation. Two types of nanofluids, namely Cu-water and Al2O3-water are used. The effects of various parameters on the flow and heat transfer characteristics are discussed through graphs and tables. © 2014 Production and hosting by Elsevier B.V.


Mandal B.,Kalyani Government Engineering College | Roy P.K.,Dr. B. C. Roy Engineering College
International Journal of Electrical Power and Energy Systems | Year: 2013

This paper presents a newly developed teaching learning based optimization (TLBO) algorithm to solve multi-objective optimal reactive power dispatch (ORPD) problem by minimizing real power loss, voltage deviation and voltage stability index. To accelerate the convergence speed and to improve solution quality quasi-opposition based learning (QOBL) concept is incorporated in original TLBO algorithm. The proposed TLBO and quasi-oppositional TLBO (QOTLBO) approaches are implemented on standard IEEE 30-bus and IEEE 118-bus test systems. Results demonstrate superiority in terms of solution quality of the proposed QOTLBO approach over original TLBO and other optimization techniques and confirm its potential to solve the ORPD problem. © 2013 Elsevier Ltd. All rights reserved.


Das K.,Kalyani Government Engineering College
Computers and Mathematics with Applications | Year: 2012

In the present study, the effects of partial slip on steady boundary layer stagnation point flow of an electrically conducting micropolar fluid impinging normally towards a shrinking sheet in the presence of a uniform transverse magnetic field is investigated. A similarity transformation technique is adopted to obtain the self similar ordinary differential equations and then solved numerically using symbolic software MATHEMATICA 7.0. The features of the flow and heat transfer characteristics for different values of the governing parameters are analyzed and discussed through graphs and tables. Both cases of assisting and opposing flows are considered. The physical aspects of the problem are highlighted and discussed. © 2011 Elsevier Ltd. All rights reserved.


Das K.,Kalyani Government Engineering College
Computers and Fluids | Year: 2012

This article presents a numerical investigation on the convective heat transfer performance of nanofluids over a permeable stretching surface in the presence of partial slip, thermal buoyancy and temperature dependent internal heat generation or absorption. Two different types of nanoparticles, namely Cu and Al 2O 3 are considered by using water-based fluid with Prandtl number P r=6.785 for simulating the heat transfer and flow behavior of nanofluids. The proposed model is validated with the available experimental data and correlations. The similarity solutions which depend on nanoparticle volume fraction φ (0≤φ≤0.2), slip parameter, suction/injection parameter, etc. are presented through graphs and tables and discussed in detail. © 2012 Elsevier Ltd.


Das K.,Kalyani Government Engineering College
International Journal for Numerical Methods in Fluids | Year: 2012

The influence of partial slip, thermal radiation, chemical reaction and temperature-dependent fluid properties on heat and mass transfer in hydro-magnetic micropolar fluid flow over an inclined permeable plate with constant heat flux and non-uniform heat source/sink is studied. The transverse magnetic field is assumed as a function of the distance from the origin. Also it is assumed that the fluid viscosity and the thermal conductivity vary as an inverse function and linear function of temperature, respectively. With the use of the similarity transformation, the governing system of non-linear partial differential equations are transformed into non-linear ordinary differential equations and are solved numerically using symbolic software MATHEMATICA7.0 (Wolfram Research, Champaign, IL). The numerical values obtained for the velocity, microrotation, temperature, species concentration, skin friction coefficient and the Nusselt number are presented through graphs and tables for several sets of values of the parameters. The effects of various physical parameters on the flow and heat transfer characteristics are discussed. © 2011 John Wiley & Sons, Ltd.

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