Aerospace Engineering

Effect of roughness elements on the blade-body juncture horseshoe vortex

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  • Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136

Received date: 2012-07-09

Abstract

In order to weaken the horseshoe vortex, the roughness elements are placed upstream of the blade on the flat plate. A kind of passive control method is proposed. With the help of computational fluid dynamics software Fluent, this paper carries out a study on effects of roughness elements′ heights and positions on the turbulent junction flow. The results show that any roughness elements can weaken the horseshoe vortex. The case is proposed with d/T=1, h/T=1/20 (d is distance between roughness elements and the leading edge of the blade, T is maximum thickness of the blade, h is height of the elements), which colligates spatial scale of elements′ wake, horseshoe vortex′s stream-wise votex′s scale and primary horseshoe vortex′s vorticity. Furthermore, the increasing heights of the roughness elements are beneficial to weaken the main horseshoe vortex, but the vortex legs will be far away from the blade.

Cite this article

WANG Jian-ming, ZHU Kui, WANG Hu-bin, ZHENG Yao-hui . Effect of roughness elements on the blade-body juncture horseshoe vortex[J]. Journal of Shenyang Aerospace University, 2013 , 30(1) : 1 -4 . DOI: 10.3969/j.issn.2095-1248.2013.01.001

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