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

由于涡旋结构对物体表面的尾迹结构和流动力有直接的影响，因此研究物体壁面涡结构的生长过程是非常重要和有趣的。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。本课题采用流动可视化、PIV测量和数值研究相结合的方法，研究了运动弹性翼型近壁面位置涡结构的生长过程。结果表明，弹性翼型的动推力与基于后缘起伏幅值和频率的斯特劳哈尔数有很大关系。此外，升沉弹性翼型通过壁面变形从前缘向尾缘发展涡，具有与升沉刚性翼型不同的特点

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 and Kazuhiro Tanaka
• 通讯作者: Masaki Fuchiwaki and 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

The Growth of Vorticity in the vicinity of a Wall of an Elastic Moving Airfoil and Their Developing Processes

弹性运动翼型壁面附近涡度的增长及其发展过程

• 发表时间: 2011
• 作者: 栗波智樹;渕脇正樹;田中和博
• 通讯作者: 田中和博

Vortex Flow Developed in the Vicinity of a Wall of an Elastic Heaving Airfoil and its Dynamic Behavio

弹性起伏翼型壁附近产生的涡流及其动态行为

• 发表时间: 2010
• 作者: 栗波智樹;渕脇正樹;田中和博
• 通讯作者: 田中和博