Wall turbulence eddy structure control by a group of heating wires

N. Jiang; Y. Lian; Wei Shu; Zhi Wang

doi:10.1117/12.468773

29 May 2002 Wall turbulence eddy structure control by a group of heating wires

N. Jiang, Y. Lian, Wei Shu, Zhi Wang

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468773
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

Abstract

A group of streamwise vortices in the near wall region of turbulent boundary layer are introduced by a group of parallel longitudinal heating wires to control the multi-scale eddy structures in wall turbulence. The relations between the introduced streamwise vortices and the multi-scale eddy structures in wall turbulence are studied. The influence of introduced streamwise vortices on multi-scale eddy structures in wall turbulence is analyzed by wavelet transform. The integrated kinetic energy of eddy structures at each scale is enhanced by the parallel heating wires. The characteristic time scales of different size eddy structures are changed by the introduced streamwise vortices.

Citation Download Citation

N. Jiang, Y. Lian, Wei Shu, and Zhi Wang "Wall turbulence eddy structure control by a group of heating wires", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468773

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