Effect Double Stratification on Mixed Convection in a Power-Law Fluid Saturated Porous Medium

Effect Double Stratification on Mixed Convection in a Power-Law Fluid Saturated Porous Medium

D. Srinivasacharya G. Swamy Reddy 

Department of Mathematics, National Institute of Technology Warangal-506004, Andhra Pradesh, India

Page: 
141-146
|
DOI: 
https://doi.org/10.18280/ijht.300220
Received: 
N/A
| |
Accepted: 
N/A
| | Citation

OPEN ACCESS

Abstract: 

Mixed convection heat and mass transfer along a vertical plate embedded in a power-law fluid saturated Darcy porous medium with thermal and solutal stratification effects is studied. The governing partial differential equations are transformed into ordinary differential equations using similarity transformations and then solved numerically using shooting method. The non-dimensional heat and mass transfer coefficient are presented graphically for various values of power-law index, Lewis number, thermal and solutal stratification parameters. 

1. Introduction
2. Mathematical Formulation
3. Shooting Method Numerical Procedure
4. Results and Discussion
5. Conclusions
  References

[1] D. A. Nield and A. Bejan, “Convection in porous media”, 3rd Edition, New-York, Springer-Verlag, 2006. 

[2] E.M. Abo-Eldahab and A.M.Salem, “MHD combined convection flow of a non-Newtonian power-law fluid due to a rotating cone or disk”, Canadian Journal of Physics, Vol.82, pp.531-540, 2004.

[3] M. Kumari and G. Nath, “Conjugate mixed convection transport from a moving vertical plate in a non-Newtonian fluid, Int. J. Therm. Sci., Vol.45, pp.607-614. 2006.

[4] G. Degan, C. Akowanou and N.C. Awanou “Transient natural convection of non-Newtonian fluids about a vertical surface embedded in an anisotropic porous medium”, Int. J. Heat Mass Transfer, Vol.50, pp.4629-4639, 2007.

[5] A.J. Chamkha and J. Al-Humoud, “ Mixed convection heat and mass transfer of non-Newtonian fluids from a permeable surface embedded in a porous medium”, Int. J. Numer. Meth. Heat and Fluid Flow, Vol.17, pp.195-212, 2007.

[6] Chien-Hsin Chen., “Magneto-hydrodynamic mixed convection of a power-law fluid past a stretching surface in the presence of thermal radiation and internal heat generation /absorption”, Int. J of Non-Linear Mech., Vol.44, pp.596-603, 2009.

[7] S.Nasser, Elgazery, Y. Nader, and Abd Elazem., “Effects of variable properties on Magnetohydrodinamics unsteady mixed convection in non-Newtonian fluid with variable surface temperature”, Journal of Porous Media, Vol.12, pp.477-488, 2009.

[8] R.R. Kairi and P.V.S.N. Murthy, “Effect of double dispersion on mixed convection heat and mass transfer in a non-newtonian fluid-saturated non-darcy porous medium”, Journal of Porous Media, Vol.13, pp.749-757, 2010.

[9] A.J. Chamkha, E. Sameh, Ahmed, Abdulkareem and S. Aloraier., “Melting and radiation effects on mixed convection from a vertical surface embedded in a non-Newtonian fluid saturated non-Darcy porous medium for aiding and opposing eternal flows”, Int J of Phy Sci., Vol.5, pp.1212-1224, 2010.

[10] T. Hayat, M. Mustafa, and S. Obaidat, “Simultaneous Effects of MHD and Thermal Radiation on the Mixed Convection Stagnation-Point Flow of a Power-Law Fluid”, Chinese Phys. Lett., Vol.28, pp.074702, 2011.

[11] R.Y. Jumah and A.S. Mujumdar “Free convection heat and mass transfer of non-Newtonian power law fluids with yield stress from a vertical flat plate in saturated porous media”, Int. Comm. Heat Mass Transfer, Vol.27, pp.485-494, 2000.

[12] P.V.S.N. Murthy, D. Srinivasacharya and P.V.S.S.R. Krishna Effect of Double Stratification on Free Convection in Darcian Porous Medium, Transactions ASME J. Heat Transfer, Vol.126, pp.297-300, 2004.

[13] P.A. Lakshmi Narayana and P. V. S. N. Murthy, “Free convective heat and mass transfer in a doubly stratified non-Darcy porous medium, Transactions of the ASME, J Heat Transfer, Vol.128, pp.1204-1212, 2006.

[14] C.Y.Cheng, “Combined heat and mass transfer in natural convection flow from a vertical wavy surface in a power-law fluid saturated porous medium with thermal and mass stratification”, International Communications in Heat and Mass Transfer, Vol.36, pp.351-356, 2009.

[15] Postelnicu, P.A. Lakshmi Narayana and P. V. S. N. Murthy, “Free convection heat and mass transfer in a doubly stratified porous medium saturated with a power-law fluid”, International journal of Fluid mechanics Research, Vol.36, pp.524-537, 2009.