Islampur College

Islāmpur, India

Islampur College

Islāmpur, India
SEARCH FILTERS
Time filter
Source Type

Kairi R.R.,Islampur College | Ramreddy C.,National Institute of Technology Rourkela
Heat Transfer - Asian Research | Year: 2014

The effects of viscous dissipation and solutal dispersion on free convection about an isothermal vertical cone with a fixed apex half angle, pointing downwards in a power-law fluid-saturated non-Darcy porous medium are analyzed. The governing partial differential equations are transformed into partial differential equations using non-similarity transformation. The resulting equations are solved numerically using an accurate local non-similarity method. The accuracy of the numerical results is validated by a quantitative comparison of the heat and mass transfer rates with previously published results for a special case and the results are found to be in good agreement. The effects of viscous dissipation, solutal dispersion, and/or buoyancy ratio on the velocity, temperature, and concentration field as well as on the heat and mass transfer rates are illustrated, by insisting on the comparison between pseudo-plastic, dilatant, and Newtonian fluids. © 2013 Wiley Periodicals, Inc.


Kairi R.R.,Islampur College | RamReddy C.,National Institute of Technology Warangal
Frontiers in Heat and Mass Transfer | Year: 2015

In this paper, we investigated the influence of melting on mixed convection heat and mass transfer from the vertical flat plate in a non-Newtonian nanofluid saturated porous medium. The wall and the ambient medium are maintained at constant, but different, levels of temperature and concentration. The Ostwald–de Waele power-law model is used to characterize the non-Newtonian nanofluid behavior. A similarity solution for the transformed governing equations is obtained. The numerical computation is carried out for various values of the non-dimensional physical parameters. The variation of temperature, concentration, heat and mass transfer coefficients with the power-law index, mixed convection parameter, melting parameter, Brownian motion parameter, thermophoresis parameter, buoyancy ratio and Lewis number are discussed in a wide range of values of these parameters. © 2015 Global Digital Central. All rights reserved.


RamReddy C.,National Institute of Technology Warangal | Kairi R.R.,Islampur College | Raji Reddy N.,Jyothishmathi Institute of Technology and Science
Procedia Engineering | Year: 2015

The combined radiation and thermo-diffusion effects on natural convective transport over a horizontal melting plate embedded in a porous media saturated with an electrically conducting fluid of variable viscosity is investigated in this paper. The Reynolds viscosity model is used to explore the significance of the viscosity of the fluid. Using the numerical method, a solution for the non-dimensional equations is found. The effects of the parameter responsible for the melting surface and other physical parameters on the development of various profiles along horizontal plate are given and the salient features are discussed. © 2015 The Authors.


Roy M.N.,North Bengal University | Sarkar K.,Islampur College | Sinha A.,Islampur College
Journal of Solution Chemistry | Year: 2014

The apparent molar volume (θ V ), viscosity B-coefficient, and molar refraction (R m ) of l-ascorbic acid have been determined in (40, 60 and 80 mass%) water and 2-propanol solutions at 298.15, 308.15 and 318.15 K from density (ρ), viscosity (η) and refractive index (n D) measurements, respectively. The limiting apparent molar volumes (θV 0) and experimental slopes (S V ∗), derived from the Masson equation, have been interpreted in terms of solute-solvent and solute-solute interactions, respectively. The viscosity data were analyzed using the Jones-Dole equation and the derived B-coefficient has also been interpreted in terms of solute-solvent interactions in the solutions. R m has been calculated using the Lorentz-Lorenz equation. © 2014 Springer Science+Business Media New York.


Kairi R.R.,Islampur College | Murthy P.V.S.N.,Indian Institute of Technology Kharagpur
Journal of Porous Media | Year: 2013

This paper investigates the influence of the effect of variable viscosity and Soret effect on natural convection heat transfer from a vertical flat plate in a non-Darcy porous medium saturated with Newtonian fluid of variable viscosity. The wall and the ambient medium are maintained at constant but different levels of temperature and concentration. The viscosity of the fluid is assumed to follow the Reynolds viscosity model. A similarity solution for the transformed governing equations is obtained and computation is carried out for various values of the nondimensional physical parameters. The variation in temperature and concentration distributions, heat and mass transfer coefficients with melting parameter, Soret parameter, viscosity parameter, buoyancy ratio, and Lewis number is discussed for a wide range of values of these parameters. © 2013 by Begell House, Inc.


Roy M.N.,North Bengal University | Saha B.C.,North Bengal University | Sarkar K.,Islampur College
Physics and Chemistry of Liquids | Year: 2015

The apparent molar volume (ϕV), viscosity B-coefficient and molar refraction (RM) have been determined of L-valine in aqueous solution of LiCl, NaCl and KCl at 298 K, 303 K and 308 K from density (ρ), viscosity (η) and refractive index (nD) measurements, respectively. The limiting apparent molar volumes (ϕV 0) and experimental slopes (SV*) derived from the Masson equation have been interpreted in terms of solute–solvent and solute–solute interactions, respectively. The viscosity data were analysed using the Jones–Dole equation and the derived parameter B has also been interpreted in terms of solute–solvent interactions in the solutions. Molar refraction (RM) has been calculated using the Lorentz–Lorenz equation. © 2015 Taylor & Francis.

Loading Islampur College collaborators
Loading Islampur College collaborators