the growing process of the vortex structure at the location close to the wall surface and Movement-Fluid-Structure Interaction Mechanism

靠近壁面位置涡结构的生长过程及运动-流-固耦合机制

• 批准号: 22360080
• 负责人: TANAKA Kazuhiro
• 金额: $ 11.81万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22360080/
• 关键词: 流体計測; 非定常流れ; はく離; 翼; 非定常運動; 渦; 非定運動; 弾性翼

It is very important and interesting to study growing process of vortex structure on the wall surface of a body because the vortex structure affects the wake structure and flow force on the body in a direct fashion. Especially on a moving body with deforming wall surface such as a elastic airfoil, the precise study is needed. In this project, the growing process of the vortex structure at the location close to the wall surface of the moving elastic airfoil has been studied by flow visualization and PIV measurement as well as numerical studies. As a result, it is verified that dynamic thrust acting on elastic airfoils is much dependent on the Strouhal number based on heaving amplitude and frequency of the trailing edge. Moreover, the heaving elastic airfoils develop the vortex with the characteristics different from heaving rigid airfoils from the leading edge toward the trailing edge by wall deformation

研究物体壁面涡结构的生长过程是非常重要和有趣的，因为涡结构直接影响物体的尾流结构和流动力。特别是对于弹性翼型等具有变形壁面的运动体，需要进行精确的研究。在该项目中，通过流动可视化和PIV测量以及数值研究，研究了运动弹性翼型靠近壁面位置的涡结构的生长过程。结果表明，作用在弹性翼型上的动推力很大程度上取决于基于后缘起伏幅度和频率的斯特劳哈尔数。此外，垂荡弹性翼型通过壁面变形从前缘向后缘形成具有与垂荡刚性翼型不同特征的涡流

项目成果

Vortex Structure around Moving Elastic Bodies by Fluid Structure Interaction Simulation

通过流体结构相互作用模拟运动弹性体周围的涡流结构

• 发表时间: 2012
• 作者: Tetsushi Nagata; Masaki Fuchiwaki;Kazuhiro Tanaka
• 通讯作者: Kazuhiro Tanaka

Vorticity Components of Vortices rolled up from an Elastic Moving Thin Film

从弹性移动薄膜卷起的涡流的涡量分量

• 发表时间: 2011
• 作者: 永田哲志;渕脇正樹;田中和博
• 通讯作者: 田中和博

Vortex Structure rolled up from Elastic Thin Film by Fluid Structure Interaction Simulation

通过流体结构相互作用模拟由弹性薄膜卷起的涡结构

• 发表时间: 2011
• 作者: 永田哲志;渕脇正樹;田中和博
• 通讯作者: 田中和博

Dynamic behavior of vortex ring formed on a butterfly wing and its structure

蝴蝶翅膀涡环的动力学行为及其结构

• 发表时间: 2010
• 作者: Masaki Fuchiwaki

Vortex Structure around Moving Elastic Airfoils and Their Characteristics of Dynamic Forces

运动弹性翼型周围的涡结构及其动力特性

• 发表时间: 2010
• 作者: Masaki Fuchiwaki