Abstract
The reduction of drag generated by axisymmetrica bluff bodies resulting from the control of the boundary layer with dimpled surfaces was investigated. A central composite design with 3 factors and 5 levels for each factor was used to optimize the parameters of the dimpled surfaces. Wind tunnel tests with a Mach number of 2.51 and a Reynolds number of 1.88 × 106 based on the maximum diameter of the model indicate that the dimples on the rearward configuration can reduce the viscous forebody drag by 4.98%, the base drag by 2.69%, and the total drag by 2.98%, respectively. By using the dimpled surface optimized by the quadratic regression equation, the total drag can be reduced by 3.81%.
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Zhang, C., Ren, L., Han, Z., Liu, Q. (2008). Experimental Optimization of Bionic Dimpled Surfaces on Axisymmetric Bluff Bodies for Drag Reduction. In: Morrison, J.F., Birch, D.M., Lavoie, P. (eds) IUTAM Symposium on Flow Control and MEMS. IUTAM Bookseries, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6858-4_49
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DOI: https://doi.org/10.1007/978-1-4020-6858-4_49
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-6857-7
Online ISBN: 978-1-4020-6858-4
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