The Experimental Investigation of Energy Transfer in wall Turbulence Based on Wavelet Transform and FFT and HHT
Using constant temperature hot-wire anemometer IFA300, we measured the wall turbulence on different normal location of the boundary layer in the wind tunnel experiment section. The wind tunnel is of low turbulence intensity. We have applied Fourier transform, Wavelet transform and Hilbert-Huang transform to analyze the turbulent fluctuating velocity obtained by measurement and have compared turbulent energy transfer law in different wall distance. This article quantitatively analyzed on the eddy motion process for different wall distance in wall turbulence from the energy point of view. It also discussed the energy transfer law based on eddy combination theory and the inertial sub-range.
Hilbert-Huang transform (HHT) wall turbulence inertial sub-range energy transfer
X. Q.JIN Z.Y. XIA
Department of Mechanics, Tianjin University, China Tianjin Key Laboratory of Modern Engineering Mechanics, China
国际会议
合肥
英文
2738-2741
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）