A single camera volumetric particle image velocimetry and its application
A single camera volumetric particle image velocimetry and its application
复制标题
单相机体积粒子图像测速及其应用
DOI：
10.1007/s11431-012-4921-7
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发表时间：
2012-07
期刊：
影响因子：
--
通讯作者：
Wang JinJun
中科院分区：
文献类型：
--
作者：
Gao Qi;Wang HongPing;Wang JinJun
体积粒子图像测速技术（VPIV）是指一种基于PIV的技术，它可以获得三维测量体积中的全部速度分量。本文提出了一种新的单透镜变焦距成像方法。使用三视棱镜，使用一个摄像机从不同角度进行观察。该技术进行了测试，并成功地应用于零净质量流量射流的三维三分量（3D3C）测量。研究了测量的准确性，特别是在校准，自校准和粒子三角测量的步骤。给出了涡环发展的时间序列。结果表明，该方法具有较高的测量精度，速度矢量的验证率达到95%左右。采用涡量强度和涡量大小准则研究了涡环通过测量容积时的流动。通过比较发现，在区分旋转运动和自由剪切方面，旋涡准则比涡量准则有上级的优越性。
Volumetric particle image velocimetry (VPIV) refers to a PIV-based technique which can obtain full velocity components in a three-dimensional measurement volume. A new VPIV method with a single lens was developed. A three-vision prism was used to make viewing from different angles using one camera. The technique was tested and successfully applied to a three-dimensional three-component (3D3C) measurement of a zero-net-mass-flux jet flow. The accuracy of the measurement was investigated, specifically in steps of calibration, self-calibration and particle triangulation. Time sequence of a vortex ring development was presented. It was shown that the measurement has high accuracy with validation rate of velocity vector reaching about 95%. The flow with vortex ring passing the measurement volume was studied using both swirl strength and vorticity magnitude criteria. Through comparison, the swirl criterion was found to be superior to the criterion of vorticity in differentiating the rotation motion and the free shear.
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影响因子：
3.7
作者：
Q. Gao;C. Ortiz-Dueñas;E. Longmire
通讯作者：
Q. Gao;C. Ortiz-Dueñas;E. Longmire
影响因子：
2.4
作者：
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S. Coudert;J. Foucaut;J. Kostas;M. Stanislas;P. Braud;C. Fourment;J. Delville;M. Tutkun;Faraz Mehdi;P. B. Johansson;W. George
影响因子：
2.4
作者：
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通讯作者：
N. Malik;T. Dracos;Dimitrios A. Papantoniou
影响因子：
1
作者：
D. Mishra;K. Muralidhar;P. Munshi
通讯作者：
D. Mishra;K. Muralidhar;P. Munshi
DOI：
10.1016/j.imavis.2007.01.002
发表时间：
2007-11
期刊：
Image Vis. Comput.
影响因子：
--
作者：
Yong Xiao;K. Lim
通讯作者：
Yong Xiao;K. Lim