Date:

2025-04-30

Title of Paper:

Probability density function of streamwise velocity fluctuation in turbulent T-junction flows

Journal:

Energy Procedia

Summary:

Probability density function of streamwise velocity fluctuation in turbulent T-junction flows

Mei Lin, , Xiaoyu Qiao, Yantao Yin, Zhimin Lin, Qiuwang Wang


Abstract
The streamwise velocity time series are measured at the centreline of T-junction channel with aid of the hot wired anemometry. The probability density function (PDF) of the velocity fluctuation has been investigated under different cross velocities and velocity ratios. The PDF is almost Gaussian at the centre of the cross tube. Whereas for the other normal locations, y/w≤0.14, the PDF are negatively skewed with sub-Gaussian distributions in the high speeds. Meanwhile they are independent of the cross velocity and velocity ratio. In contrast, the streamwise velocity fluctuation is highly intermittent in the low speeds and they are dependent of the velocity ratio.

Co-author:

Mei Lin， Xiaoyu Qiao, Yantao Yin, Zhimin Lin, Qiuwang Wang

Page Number:

5005-5010

Translation or Not:

No

Date of Publication:

2017-01-02