Development and validation of echo PIV
Development and validation of echo PIV
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DOI：
10.1007/s00348-003-0743-5
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发表时间：
2004-03-01
影响因子：
2.4
通讯作者：
Shandas, R
中科院分区：
文献类型：
--
作者：
Kim, HB;Hertzberg, JR;Shandas, R
超声回波图像与数字粒子图像测速（DPIV）方法相结合，产生了一种适用于不透明流动条件（包括临床应用中的血流）的二维、双分量速度场测量技术。先进的PIV处理算法，包括迭代方案和窗口偏移被用来增加速度测量的空间分辨率，最大为1.8 mmx3.1 mm。在充分发展的层流管流速度验证测试显示良好的一致性与光学PIV测量和预期的抛物线轮廓。到目前为止，已经获得了1至60厘米/秒的动态范围。
The combination of ultrasound echo images with digital particle image velocimetry (DPIV) methods has resulted in a two-dimensional, two-component velocity field measurement technique appropriate for opaque flow conditions including blood flow in clinical applications. Advanced PIV processing algorithms including an iterative scheme and window offsetting were used to increase the spatial resolution of the velocity measurement to a maximum of 1.8 mmx3.1 mm. Velocity validation tests in fully developed laminar pipe flow showed good agreement with both optical PIV measurements and the expected parabolic profile. A dynamic range of 1 to 60 cm/s has been obtained to date.