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

IF 2.5 3区工程技术

Journal of Hydrodynamics Pub Date : 2024-07-05 DOI:10.1007/s42241-024-0036-4

Yi-jing Hu, Yi Qu, Qin Wu, Biao Huang

{"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":"<div><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></div>","PeriodicalId":637,"journal":{"name":"Journal of Hydrodynamics","volume":"36 3","pages":"421 - 434"},"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://link.springer.com/article/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.

查看原文本刊更多论文

偏航角对潜艇模型周围湍流结构的影响

本文旨在研究潜艇模型周围的湍流结构，并评估偏航角对湍流特性的影响。研究采用了基于边界数据浸入法的大涡流模拟。计算域由 1.2×108 个均匀分布的笛卡尔正交网格节点组成，以捕捉模型周围的基本流动特征。模型的压力系数、摩擦系数和尾流速度分布与实验数据十分吻合。模型周围主要捕获了三种不同类型的漩涡结构，包括马蹄形漩涡、帆尖漩涡和横流分离漩涡。随着偏航角的增大，马蹄涡和帆尖涡的不对称性逐渐增大，马蹄涡迎风涡腿的涡强和帆尖涡的涡强也逐渐增大。对于横流分离涡，随着偏航角的增大，流动分离区逐渐扩大并向下游迁移。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hydrodynamics MECHANICS-

自引率

12.00%

发文量

2374

审稿时长

4.6 months

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.