Evaluation and Effect of Micro Bubble Lubrication in Drag Reduction
6 Pages Posted: 24 Apr 2020
Date Written: January 19, 2020
Abstract
This paper aims to study the reduction of skin friction coefficient (Cf) of a flat plate by injecting micro bubbles onto the surface of the plate. Numerical simulation of flow of water past a flat plate was carried out at different Reynolds numbers. Skin friction coefficient (Cf) was found and compared with research papers and suitable empirical formula. The numerical solution was solved in ANSYS. Subsequently, micro bubbles were injected and the new Cf found. The velocity of injection of the bubbles was then varied. Drag reduction was observed for flat plate post micro bubble injection and injection velocity was varied, corresponding results were noted. The results agree well. This paper verifies effect of micro bubble injection in skin friction drag reduction computationally.
Keywords: Micro bubble, skin friction coefficient, Reynold number
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