In this analysis, the collective effect of temperature-reliant viscosity and internal heat generation on the appearance of convective motion in couple-stress fluids saturated a thin porous layer is investigated employing linear stability principle. The significant influences of viscosity deviation parameter Q, internal heat generation parameter H_S, couple-stress parameter C_s and Darcy number Da on the stability of the arrangement are obtained analytically and presented graphically in term of the critical thermal Darcy-Rayleigh number R_t,c. Below the critical values, no convective motion arises in the considered system. It is recognized that the viscosity deviation parameter Q and internal heat generation parameter H_S have destabilizing effect, while the couple-stress parameter C_s and the Darcy number Da show stabilizing effect on the stability of the fluidic system. By increasing the couple-stress parameter C_s from 0.2 to 0.4 and the Darcy number Da from 0.25 to 0.50, the critical thermal Darcy-Rayleigh number R_t,c increased approximately 21% and 51%, respectively.

在此分析中，利用线性稳定性原理，研究了饱和粘度和内部热量的产生对偶应力流体饱和的多孔薄层中对流运动出现的集体影响。通过分析获得了粘度偏差参数Q，内部生热参数H _S，偶合应力参数C _s和达西数Da对装置稳定性的重要影响，并以临界热达西-瑞利数R _t的形式给出了图表。_，ç。低于临界值，在考虑的系统中不会产生对流运动。可以认识到，粘度偏差参数Q和内部生热参数H _S具有去稳定作用，而耦合应力参数C _s和达西数Da对流体系统的稳定性具有稳定作用。通过将偶应力参数C _s从0.2增加到0.4，将达西数Da从0.25增加到0.50，临界热达西-瑞利数R _t，c分别增加了约21％和51％。