Interpolation Method of Velocity Vector Using Pressure Data in PIV.
Interpolation Method of Velocity Vector Using Pressure Data in PIV.
复制标题
PIV 中使用压力数据的速度矢量插值方法。
DOI：
10.3154/jvs.20.139
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
M. Kashihara
中科院分区：
文献类型：
--
作者：
K. Hojo;M. Kashihara
可以通过粒子图像测速 (PIV) 同时检查空间中多个点的速度，而无需接触流场。 PIV因其是一种有效的测量方法而受到积极的研究。但是，众所周知，许多 PIV 图像通常不是在障碍物或墙壁表面附近获得的。因此，在这样的位置获得的速度矢量的可靠性成为一个严重的问题。在本研究中，我们提出了一种计算方法，其中将基于N-S方程的优化技术和壁面附近的压力信息应用于PIV获得的速度矢量以收集所包含的误差。在本报告中，使用压力和速度矢量的模拟数据将其应用于二维腔流。
The velocities at multiple points in space can be examined simultaneously by Particle Image Velocimetry (PIV) without touching the flow fields. PIV has been studied actively because it is an effective measuring method. But, it is well known that many PIV images are not usually obtained in the neighborhood of an obstacle or a wall surface. Therefore, the reliability of velocity vector obtained in such a location becomes a serious problem.In this study, we propose the calculation method in which both the optimization technique based on N-S equations and the pressure-information near a wall surface are applied to the velocity vector obtained by PIV to collect the errors included. In this report, it is applied to a two-dimensional cavity flow using the simulation data of pressure and velocity vectors.