On predicting the onset of transient convection in porous media saturated with Non-Newtonian liquid

被引：1

作者：

Tan, K. K. ^{[1
]}

Pua, S. Y. ^{[2
]}

Yang, A. ^{[3
]}

机构：

[1] HELP Univ, ELM Grad Sch, Kuala Lumpur 50490, Malaysia

[2] Univ Putra, Dept Chem Engn, Serdang 43400, Selangor, Malaysia

[3] Hertfordshire Univ, Dept Mech Engn, Hatfield AL10 9EU, Herts, England

来源：

29TH SYMPOSIUM OF MALAYSIAN CHEMICAL ENGINEERS (SOMCHE) 2016 | 2017年 / 206卷

关键词：

HEAT-CONDUCTION; BUOYANCY; CURRENTS; RAYLEIGH; DRIVEN; FLUIDS; MODES; LAYER; FLOW;

D O I：

10.1088/1757-899X/206/1/012029

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The onset of transient convection in non-Newtonian liquid immersing porous media was simulated using a Computational Fluid Dynamics (CFD) package for the thermal boundary condition of Fixed Surface Temperature (FST). Most of the simulated values of stability criteria were found to be in good agreement with the predicted and theoretical values of transient critical Rayleigh number for non-Newtonian liquid defined by Tan and Thorpe (1992) for power-law fluids. The critical transient Rayleigh numbers for convection in porous media were found to be in good agreement with theoretical values by using apparent viscosity mu app at zero shear. The critical time and critical depth for transient heat conduction were then determined accurately that

引用

页数：10

共 20 条

[1]

[Anonymous], 1995, PRINCIPLES HEAT TRAN

[2]

Carslaw H S, 1973, CONDUCTION HEAT SOLI, P62

[3]

Combarnous M.A., 1975, Advances in Hydroscience, V10, P231

[4] CONVECTION CURRENTS IN A POROUS MEDIUM [J].