From PIV Standardization and Popularization Project to Advanced PIV
نویسندگان
چکیده
منابع مشابه
Gpu-piv
Digital Particle Image Velocimetry (PIV) is an optical technique used to measure the velocity of seeded particles in real flow. A CCD camera captures the flow field twice under exposure to a short duration laser flash. Recorded image pairs are cross-correlated to extract velocity information from these records. Time resolved PIV technology can capture images with some hundreds of frames per sec...
متن کاملPIV Measurements in Pumps
Digital Particle Imaging Velocimetry (DPIV) is a powerful nonintrusive measuring technique that has become popular in the last decade with the availability of commercial systems. In contrast to Particle Image Velocimetry (PIV), which utilizes analogue imaging and therefore time-consuming post processing, for DPIV digital video recording is encountered which is ideally suited for digital data pr...
متن کاملPIV uncertainty propagation
This paper discusses the propagation of the instantaneous uncertainty of PIV measurements to statistical and instantaneous quantities of interest derived from the velocity field. The expression of the uncertainty of vorticity, velocity divergence, mean value and Reynolds stresses is derived. It is shown that the uncertainty of vorticity and velocity divergence requires the knowledge of the spat...
متن کاملAdjoint based pressure determination from PIV-data – Validation with synthetic PIV measurements –
The aim of the study is the application and validation of an adjoint based data assimilation method for the determination of timedependent pressure fields from velocity data obtained by particle image velocimetry (PIV). The method is based on the full compressible Navier-Stokes equations. No additional constraints like incompressibility or adiabatic flow conditions are necessary. The technique ...
متن کاملPIV uncertainty quantification from correlation statistics
The uncertainty of a PIV displacement field is estimated using a generic post-processing method based on statistical analysis of the correlation process using differences in the intensity pattern in the two images. First the second image is dewarped back onto the first one using the computed displacement field which provides two almost perfectly matching images. Differences are analyzed regardi...
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ژورنال
عنوان ژورنال: Journal of the Visualization Society of Japan
سال: 2002
ISSN: 1884-037X,0916-4731
DOI: 10.3154/jvs.22.2supplement_67