Development of 3D Micro-PIV techniques Applicable to Marangoni flows in small space

开发3D Micro-PIV技术 适用于狭小空间的Marangoni流动

• 批准号: 15560157
• 负责人: UEMURA Tomomasa
• 金额: $ 2.24万
• 依托单位: Kansai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560157/
• 关键词: Micro-Flow; Three Dimensional Flow; Stereo-PTV; Inline Holography; Single-Camera Stereo Method; Parallel Projection Stereo Matching; Surface Tension; 平行投影ステレオ法; ステレオインラインホログラフィ; 3次元PTV; 3次元PIV; マイクロPIV; マイクロチャンネル流れ; 3次元速度分布; 平行投影; ステレオ撮影

The purpose of this research has been as follows ;1) Development of the measurement techniques that enable to measure instantaneous three-dimensional velocity distributions in micro-size flow fields.2) By utilizing the developed techniques, studying on interactions between surface tension and micro-flows.In this research, three kinds of imaging methods for the three-dimensional micro-PIV have been developed. The first method is a stereo-imaging method using a pair of telecentric lenses, that enables parallel projection stereo matching. The second method utilizes digital inline holography technique. The stereo inline holography technique developed in this research consists of a simple optical setup and an easy calibration method. It improves spatial resolution along the direction of optical axis. The third method is the defocus method using color eccentric apertures that can process higher distribution density of tracer particles than the ordinary defocus method.The ordinary stereo imaging setup is known to be weak in vibration and needs delicate optical alignment, especially when it is applied to tiny objects. In order to avoid the problems, some one-camera stereo imaging methods are developed. The one-camera stereo method is far robust against outside vibrations.The dimensions of measuring objects are assumed to be from some tens to hundred microns. Flows in such small space are strongly influenced by the surface tension. The major interest of the present research is an influence of surface tension and the Marangoni flows in micro-channels. Experiments concerning to the issues had not been executed, since it has taken long time to develop the measurement techniques. More experiments should be done to study the influence of surface tensions on the micro scale flows in near future.Adding to the optical methods, the feasibility study of the three-dimensional PIV technique using X-ray has done for the advanced PIV in the synchrotron radiation facility, SPRING-8.

本研究的主要目的是：1）发展微尺度流场三维瞬时速度分布的测量技术; 2）利用现有的测量技术，研究表面张力与微尺度流场的相互作用。第一种方法是使用一对远心透镜的立体成像方法，其使得能够进行平行投影立体匹配。第二种方法利用数字同轴全息技术。本研究所发展之立体同轴全息术，系由一简单之光学装置及一简易之校正方法所组成。它沿光轴方向沿着提高了空间分辨率。第三种方法是使用彩色偏心孔径的散焦方法，它可以处理比普通散焦方法更高的示踪粒子分布密度。为了避免这些问题，一些单相机立体成像方法被开发出来。单摄像机立体方法对外界振动具有很强的鲁棒性，测量对象的尺寸假设为几十到几百微米。在如此小的空间中的流动受到表面张力的强烈影响。本研究的主要兴趣是表面张力和微通道中的Marangoni流的影响。由于测量技术的发展需要很长时间，因此尚未进行有关该问题的实验。在不久的将来，需要进行更多的实验来研究表面张力对微尺度流动的影响。除了光学方法之外，还对同步辐射装置SPRING-8上先进的三维粒子图像测速技术进行了X射线三维粒子图像测速技术的可行性研究。

项目成果

ズームレンズを用いた単眼ステレオ視ディジタル・インライン・ホログラフィによるマイクロ3D-PTVの試み

使用变焦镜头的单目立体数字内联全息术尝试微型 3D-PTV

• 发表时间: 2005
• 期刊: 可視化情報学会全国講演会論文集 25-Suppl.2
• 作者: 大山 龍一郎;R.Ohyama;R.Ohyama;R.Ohyama;R.Ohyama;R.Ohyama;山本 恭史;山本恭史
• 通讯作者: 山本恭史

Behaviors of droplets generated by bubbles in the vicinity of liquid-liquid interface

液-液界面附近气泡产生的液滴行为

• 发表时间: 2005
• 期刊: Proc.5th Pacific Sym. on Flow Visualization and Image Processing (PSFVIP5) (Australia) paper 2-3(CD-ROM)
• 作者: T.Uemura;N.Yonehara;Y.Yamamoto;M.Iguchi
• 通讯作者: M.Iguchi

Utilization of transmission type diffraction gratings for easy alignment of stereo arrangement. (In Japanese)

利用透射型衍射光栅，轻松实现立体排列的对准。

• 发表时间: 2005
• 期刊: Proc.Visualization Sym. Vol.25 Suppl.2
• 作者: K.Joe;T.Uemura
• 通讯作者: T.Uemura

マイクロ3次元PTVのための平行投影画像に基づくステレオ位置計測法の検討

基于平行投影图像的微型3D PTV立体位置测量方法研究

• 发表时间: 2004
• 期刊: 第32回可視化情報シンポジウム講演論文集 24-Suppl.1
• 作者: T.Uemura;Y.Yamamoto;S.Murata;S.Nishio;M.Iguchi;K.Uesugi;山本 恭史;城憲一郎;山本 恭史;植村 知正;T.Uemura;米原紀吉;城憲一郎
• 通讯作者: 城憲一郎

Study on three-dimensional measurement techniques for micro-PIV.

微型PIV三维测量技术研究。

• 发表时间: 2004
• 期刊: Proc.15th International Symposium on Transport Phenomena (ISTP-15)(Bangkok)
• 作者: T.Uemura;Y.Yamamoto;N.Yonehara
• 通讯作者: N.Yonehara