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

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Abstract

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.

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Abbreviations

V j :

Average velocity

R :

The wall radius of the rotating disk

D w :

The outer diameter

r*(r/D):

Dimensionless radial distance

P*(ρ/V j 2):

The dimensionless pressure

Rc :

The radius of the cylindrical plexiglass water tank

V/V j :

The radial distribution of dimensionless velocity

L :

The nozzle is inserted into the cylindrical plexiglass water tank

V r/V j :

The dimensionless average velocity in the radial direction of the disk along radial component

V θ/V j :

The dimensionless average velocity in the radial distribution of circumferential component

n :

Rotation speed

D :

The inner diameter of the nozzle

H*(H/D):

Dimensionless impacting height

z*(z/D):

Dimensionless axial distance

ρ :

The density of water

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Funding

This research was funded by the National Natural Science Foundation of China (Nos. 51979240 and 51609105) and the Priority Academic Program Development of Jiangsu Higher Education Institutions (Grant Number PAPD).

Author information

Authors and Affiliations

  1. Hainan Vocational University of Science and Technology, Haikou, 571126, Hainan Province, China

    Wei Xu & Chuan Wang

  2. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, 212013, Jiangsu Province, China

    Wei Xu

  3. College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu Province, China

    Chuan Wang, Li Zhang & Di Zhang

  4. SHIMGE Pump Co., Ltd, Taizhou, 317525, Zhejiang Province, China

    Jie Ge

  5. College of Mechanical and Power Engineering, China Three Gorges University, Yichang, 443002, Hubei Province, China

    Zhenjun Gao

Authors
  1. Wei Xu
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  2. Chuan Wang
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  3. Li Zhang
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  4. Jie Ge
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  5. Di Zhang
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Corresponding author

Correspondence to Chuan Wang.

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Technical Editor: Daniel Onofre de Almeida Cruz.

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Xu, W., Wang, C., Zhang, L. et al. Numerical study of continuous jet impinging on a rotating wall based on Wray–Agarwal turbulence model. J Braz. Soc. Mech. Sci. Eng. 44, 433 (2022). https://doi.org/10.1007/s40430-022-03685-7

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  • DOI: https://doi.org/10.1007/s40430-022-03685-7

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