The thermal and mass boundary layer flow of a time-dependent isochoric viscous fluid over an oscillating cylinder entrenched in a porous medium is investigated numerically. The governing problem contains a set of coupled nonlinear partial differential equations with significant initial and boundary conditions and are solved using an implicit finite difference scheme, namely Crank–Nicholson method. The importance of physical parameters on velocity profiles, temperature profiles, concentration profiles, local skin-friction coefficient, mean skin-friction coefficient, local Nusselt number, mean Nusselt number, local Sherwood number and mean Sherwood number is explained in detail and is depicted graphically. The validation of these results is verified with the existing results, and it is correlated well.

数值研究了随时间变化的等容粘性流体在固定在多孔介质中的振荡圆柱上的热和质量边界层流动。该控制问题包含一组具有重要初始和边界条件的耦合非线性偏微分方程，并使用隐式有限差分方案（即Crank–Nicholson方法）进行了求解。详细解释了物理参数对速度分布，温度分布，浓度分布，局部皮肤摩擦系数，平均皮肤摩擦系数，局部Nusselt数，平均Nusselt数，局部Sherwood数和平均Sherwood数的重要性。 。这些结果的验证已通过现有结果进行了验证，并且具有很好的相关性。