Effects of Velocity Ratio on turbulent Mixing Layer at high Reynolds number
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Effects of Velocity Ratio on turbulent Mixing Layer at high Reynolds number
- 发表刊物：
- Journal of physics: conferences series
- 摘要：
- In this paper the effect of velocity ratio on plane mixing layer was experimentally investigated by Particle Image Velocimetry (PIV). The velocity ratio between low and high speed side are 0.25 and 0.50, respectively. The Reynolds number based on the velocity difference of two streams and hydraulic diameter of the channel is 66000. The results indicate that the maximum mean Reynolds stress on the same cross section is decreasing with the velocity ratio increasing. The maximum dimensionless mean vorticity is decreasing according to an exponential law along the stream-wise direction and the decreasing speed of dimensionless mean maximum vorticity is increasing with the velocity ratio increasing. The dimensionless vorticity caused by plate wake is decreasing sharply in a very short distance along the down stream wise direction and the decreasing speed is faster when the velocity ratio is larger.
- 合写作者：
- Fude Guo, Bin Chen, Liejin Guo, Ximin Zhang
- 卷号：
- 147(1)
- 页面范围：
- 012049
- 是否译文：
- 否
- 发表时间：
- 2009-03-27