Effect of the yaw angle on turbulent flow structures around the submarine model

Yi Jing Hu, Yi Qu, Qin Wu*, Biao Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this paper is to investigate the turbulent flow structures around the submarine model and evaluate the effect of the yaw angle on the turbulent flow characteristics. The large eddy simulation based on the boundary data immersion method is used to investigate. The computational domain consists of 1.2×108 uniformly distributed Cartesian orthogonal grid nodes to capture the basic flow characteristics around the model. The pressure coefficient, friction coefficient and wake velocity distribution are in good agreement with the experimental data. Three different types of vortex structures were mainly captured around the model, including horseshoe vortex, sail tip vortex and crossflow separation vortex. With the increase of the yaw angle, the asymmetry of the horseshoe vortex and the tip vortex gradually increases, and the vortex strength of the vortex leg on the windward of the horseshoe vortex and the vortex strength of the tip vortex also increase gradually. For the crossflow separation vortex, the flow separation zone gradually expands and migrates downstream with the increase of the yaw angle.

Original languageEnglish
Pages (from-to)421-434
Number of pages14
JournalJournal of Hydrodynamics
Volume36
Issue number3
DOIs
Publication statusPublished - Jun 2024

Keywords

  • boundary data immersion method
  • submarine model
  • Vortex structure
  • yaw angle

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