K. V. Gubareva, E. Yu. Prosviryakov, A. V. Eremin

MICROPOLAR EFFECTS AND ENERGY DISSIPATION IN A THREE-DIMENSIONAL FLOW OF A MICROPOLAR FLUID IN A CUBIC CAVITY

This paper presents a comprehensive study of energy dissipation mechanisms and micropolar effects in a three-dimensional flow of a micropolar fluid within a cubic cavity. Emphasis is laid on the analysis of different dissipation components, namely classical viscous dissipation, dissipation due to micro-rotation gradients, and dissipation arising from the interaction between macro-rotation and micro-rotation. Numerical modeling is used to obtain the spatial distributions of the micro-rotation vector and the energy dissipation field. The characteristics of macro-vortex and micro-vortex structures are compared. Quantitative estimates of the contribution of each dissipation mechanism to the overall flow energy balance are provided. The results elucidate the specific features of dissipative processes in micropolar media, and they can be used to optimize the processing of non-Newtonian fluids.

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