Numerical study of continuous jet impinging on a rotating wall based on Wray-Agarwal turbulence model

Continuous jet impact on a rotating wall is mainly used in the field of mechanical heating or cooling. In order to clarify the influence of different parameters on the flow field structure of the rotating wall, the method of jet and rotating fluid coupling in the near-wall area is adopted in this study. Different turbulence models are used to compare with the PIV experiment in the study of continuous jet impact on the static wall, and the Wray-Agarwal turbulence model is used for research. The flow field characteristics and the near-wall velocity distribution of the continuous jet impinging on the rotating disk at different speeds and impacting heights are focused. The results show that with the increasing rotation speed of the disk, the center of the vortex gradually approaches the wall of the disk until it reaches the edge of the disk. When the radial position is large, the radial and circumferential components of the velocity near the wall gradually increase linearly. The increase in the impacting height will lead to irregular vortex structure far away from the impacting wall. The research of jet impinging on rotating wall has important engineering application background and academic value.