A Two-Layer Model for Superposed Electrified Maxwell Fluids in Presence of Heat Transfer

作者：Zakaria Kadry^*; Sirwah Magdy A; Alkharashi Sameh A

来源：Communications in Theoretical Physics, 2011, 55(6): 1077-1094.

DOI：10.1088/0253-6102/55/6/24

• modified-Darcy Maxwell model
• two layers stability
• heat transfer
• surface charges
• porous media

Based on a modified-Darcy-Maxwell model, two-dimensional, incompressible and heat transfer flow of two bounded layers, through electrified Maxwell fluids in porous media is performed. The driving force for the instability under an electric field, is an electrostatic force exerted on the free charges accumulated at the dividing interface. Normal mode analysis is considered to study the linear stability of the disturbances layers. The solutions of the linearized equations of motion with the boundary conditions lead to an implicit dispersion relation between the growth rate and wave number. These equations are parameterized by Weber number, Reynolds number, Marangoni number, dimensionless conductivities, and dimensionless electric potentials. The case of long waves interfacial stability has been studied. The stability criteria are performed theoretically in which stability diagrams are obtained. In the limiting cases, some previously published results can be considered as particular cases of our results. It is found that the Reynolds number plays a destabilizing role in the stability criteria, while the damping influence is observed for the increasing of Marangoni number and Maxwell relaxation time.

• 出版日期2011-6