Open Access iconOpen Access

ARTICLE

crossmark

A Numerical Study on the Mechanisms Producing Forces on Cylinders Interacting with Stratified Shear Environments

Yin Wang1,*, Lingling Wang2, Yong Ji1, Zhicheng Xi1, Wenwen Zhang1

1 College of Water Conservancy and Ecological Engineering, Nanchang Institute of Technology, Nanchang, 330099, China
2 College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, 210098, China

* Corresponding Author: Yin Wang. Email: email

Fluid Dynamics & Materials Processing 2021, 17(2), 471-485. https://doi.org/10.32604/fdmp.2021.014652

Abstract

A three dimensional (3D) numerical wave flume is used to investigate carefully the ISWs (Internal solitary wave) forces acting on cylinders interacting with a stratified shear environment. Using the Large-Eddy Simulation (LES) approach and analyzing the distribution of shear stress and pressure along the surface of the cylinder, the differential pressure resistance and the viscous force are obtained. The method of multiple linear regression analysis is adopted and a comprehensive influence coefficient is determined accordingly to account for the dimensionless forces acting on the cylinder. Results show that the differential pressure resistance on a square cylinder is 1.5 times higher than that on a circular cylinder in the upper layer, while the differential pressure resistance on a square cylinder is 3.5 times larger than that on a circular cylinder in the lower layer. The viscous force is 1–2 orders of magnitude smaller than the differential pressure resistance, which means that the viscous force could be ignored. The comprehensive influence coefficient shows positive correlation with the relative wave height and negative correlation with upper and lower water depth ratio.

Keywords


Cite This Article

APA Style
Wang, Y., Wang, L., Ji, Y., Xi, Z., Zhang, W. (2021). A numerical study on the mechanisms producing forces on cylinders interacting with stratified shear environments. Fluid Dynamics & Materials Processing, 17(2), 471-485. https://doi.org/10.32604/fdmp.2021.014652
Vancouver Style
Wang Y, Wang L, Ji Y, Xi Z, Zhang W. A numerical study on the mechanisms producing forces on cylinders interacting with stratified shear environments. Fluid Dyn Mater Proc. 2021;17(2):471-485 https://doi.org/10.32604/fdmp.2021.014652
IEEE Style
Y. Wang, L. Wang, Y. Ji, Z. Xi, and W. Zhang "A Numerical Study on the Mechanisms Producing Forces on Cylinders Interacting with Stratified Shear Environments," Fluid Dyn. Mater. Proc., vol. 17, no. 2, pp. 471-485. 2021. https://doi.org/10.32604/fdmp.2021.014652



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1803

    View

  • 1135

    Download

  • 0

    Like

Share Link