title: The onset of double diffusive convection in a viscoelastic fluid-saturated porous layer with non-equilibrium model.
abstract: The onset of double diffusive convection in a viscoelastic fluid-saturated porous layer is studied when the fluid and solid phase are not in local thermal equilibrium. The modified Darcy model is used for the momentum equation and a two-field model is used for energy equation each representing the fluid and solid phases separately. The effect of thermal non-equilibrium on the onset of double diffusive convection is discussed. The critical Rayleigh number and the corresponding wave number for the exchange of stability and over-stability are obtained, and the onset criterion for stationary and oscillatory convection is derived analytically and discussed numerically.
authors: Department of Engineering Mechanics, School of Civil Engineering, Shandong University, Jinan, P.R. China.
authors: Zhixin
authors: Z
authors: Yang
authors: Shaowei
authors: S
authors: Wang
authors: Moli
authors: M
authors: Zhao
authors: Shucai
authors: S
authors: Li
authors: Qiangyong
authors: Q
authors: Zhang
mesh_terms: D000465:Algorithms; D018481:Convection; D004058:Diffusion; D008962:Models, Theoretical; D016062:Porosity; D055682:Viscoelastic Substances
chemical_list: D055682:Viscoelastic Substances