{"title":"Effect of the yaw angle on turbulent flow structures around the submarine model","authors":"Yi-jing Hu, Yi Qu, Qin Wu, Biao Huang","doi":"10.1007/s42241-024-0036-4","DOIUrl":null,"url":null,"abstract":"<p>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 1.2×10<sup>8</sup> 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.</p>","PeriodicalId":637,"journal":{"name":"Journal of Hydrodynamics","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hydrodynamics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s42241-024-0036-4","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
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.
期刊介绍：
Journal of Hydrodynamics is devoted to the publication of original theoretical, computational and experimental contributions to the all aspects of hydrodynamics. It covers advances in the naval architecture and ocean engineering, marine and ocean engineering, environmental engineering, water conservancy and hydropower engineering, energy exploration, chemical engineering, biological and biomedical engineering etc.
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