Bejan’s thermal and mass flow visualization in micropolar fluid

Abstract

Micropolar fluids are greatly utilized in biomedical applications as in biological; physical, chemical processes, lubrication systems, porous media and hydrodynamic-fluid problems and many others. An attempt is made to demonstrate the thermal and mass flow phenomena in micropolar fluids through the heat and mass functions concepts. The present physical model is devised based on the used geometry and free convection phenomena and gives the coupled nonlinear differential equations. Crank–Nicolson numerical scheme has been applied to disclose the silent flow and thermal features of micropolar fluid about a vertical cylinder. Physical behaviors of various parameters are discussed in terms of flow profiles and visualization patterns. Tabular solutions are presented to illustrate the importance of engineering quantities. Thermal and velocity contours are suppressed in the vicinity and enhanced away from the cylinder. Heatlines become closer to the heated surface, whereas masslines move far from the heated cylinder under free convection conditions for the rising Prandtl number. Guarantee of the obtained solutions are presented and shows an excellent agreement and this fact confirms the numerical accuracy.