Stereoscopic particle image velocimetry |
| |
Authors: | A K Prasad |
| |
Institution: | (1) Department of Mechanical Engineering University of Delaware, Newark, DE 19716-3140, USA, US |
| |
Abstract: | Stereoscopic particle image velocimetry (PIV) employs two cameras to record simultaneous but distinct off-axis views of the
same region of interest (illuminated plane within a flow seeded with tracer particles). Sufficient information is contained
in the two views to extract the out-of-plane motion of particles, and also to eliminate perspective error which can contaminate
the in-plane measurement. This review discusses the principle of stereoscopic PIV, the different stereoscopic configurations
that have been used, the relative error in the out-of-plane to the in-plane measurement, and the relative merits of calibration-based
methods for reconstructing the three-dimensional displacement vector in comparison to geometric reconstruction. It appears
that the current trend amongst practitioners of stereoscopic PIV is to use digital cameras to record the two views in the
angular displacement configuration while incorporating the Scheimpflug condition. The use of calibration methods has also
gained prominence over geometric reconstruction.
Received: 15 April 1999/Accepted: 1 February 2000 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|