检索结果-南通市图书馆

vortex control BY THE SPANWISE SUCTION FLOW ON THE UPPER SURFACE OF DELTA WING

Acta Mechanica Sinica 1999年第2期15卷 116-125页

作者：杨国伟陆夕云庄礼贤 Department of Modern Mechanics University of Science and Technology of ChinaHefei Anhui China 230026

The numerical investigation has been performed to explore the feasibility of vortex control by leading edge sucking excitation on a delta wing. The results reveal that the flow on the upper surface of the delta wing changes significantly in a wide range of the angle of attack. For the vortical flow at moderate angle of attack, the secondary and tertiary vortices are weakened or suppressed, and the total lift is almost unchanged. For the stalled flow at high angle of attack, the leading edge concentrated vortex is recovered, and the lift is enhanced with increasing suction rate. For the bluff-body flow at even high angles of attack, the lift can still be improved. The concentrated vortex disappears on the upper surface, and the load increment is nearly unchanged along the chordwise direction.

关键词： vortex control separation flow delta wing numerical simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Parametric study of Liutex-based force field models

引用

Journal of Hydrodynamics 2021年第1期33卷 86-92页

作者： Wei-wen Zhao Yi-qian Wang Song-tao Chen Chun-hui Ma De-cheng Wan Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Mathematical Science Soochow UniversitySuzhou 215006China

The motion of fluid consists of different scales of coherent vortical *** vortical structures determine the characteristics of fluid motion and are key to understand fluid *** this paper,we study the fine control method of vortical structures based on the Liutex force field *** is achieved by constructing a source term using Liutex and directly add it to the Navier-Stokes *** investigate the influence of the constructed Liutex force model on vortical structures,a flow past a cylinder at Reynolds number of 100 is numerically studied with different source term magnitude and *** drag and lift forces on the cylinder,as well as the flow field near and behind the cylinder are compared and *** show that Liutex force model can effectively strengthen or weaken the vortical structures based on different purpose.

关键词： Liutex vector vortex dynamics vortex control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applications of Liutex-based force field models for cavitation simulation

引用

Journal of Hydrodynamics 2021年第3期33卷 488-493页

作者： Min-sheng Zhao Wei-wen Zhao De-cheng Wan Yi-qian Wang Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Ocean College Zhejiang UniversityZhoushan316021China School of Mathematical Science Soochow UniversitySuzhou215006China

When studying the flow dynamics and the characteristics of fluid motion,vortex structure with their interactions is the key *** the present work,a vortex control method is investigated based on the vortex identification system of *** numerical study is carried out in OpenFOAM by directly adding a source term to the Navier-Stokes equations,which is called the centripetal force model in Liutex method.A 2-D test case is examined to justify the proposed method in cavitating flow around Clark-Y hydrofoil,the simulation results show that the improved Liutex solver is *** of controlling the rotation strength of vortices are able to change the flow field and suppress the *** applicability of vortex-based control method in 3-D flow field is also *** results show that cavitation surrounded by particular vortex can be effectively influenced.

关键词： Liutex force model cavitation vortex control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：