24 August 2009 Application studying of PIV on groove drag reduction characteristics
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737520 (2009) https://doi.org/10.1117/12.839081
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
Abstract
This article discusses in detail the principle of drag-reducing using the grooved surface. The flow boundary layer over five kinds of different shapes grooved surface are studied experimentally by PIV technology, obtained velocity distribution at flow direction and normal direction. used the loss method of flow momentum and Ludwieg & Tillman experience formula method, respectively, calculated the local drag coefficient of groove and smooth plate and make a detailed comparative analysis. Investigated the factors on the impact of resistance of influence groove resistance properties, and analysis the mechanism of drag reduction, Show that groove has the function of weakened the role of turbulence, and this implies that the local friction of the flow is reduced. The maximum drag reduction efficiency in the 2# groove plate is the drag reduction 5.89 %. The experimental results indicate that using the PIV technology to measure the turbulent boundary layer is totally feasible.
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Shuli Wang, Shuli Wang, Xiaojun Shi, Xiaojun Shi, Dong Liu, Dong Liu, Qi Sun, Qi Sun, "Application studying of PIV on groove drag reduction characteristics", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737520 (24 August 2009); doi: 10.1117/12.839081; https://doi.org/10.1117/12.839081
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