DOI: 10.1615/TSFP6
VALIDATION AND APPLICATION OF TOMOGRAPHIC PARTICLE IMAGE VELOCIMETRY FOR LARGE SCALE CONVECTIVE AIR FLOW
SINOPSIS
Tomographic Particle Image Velocimetry for large
scale applications (LST-PIV) is applied to a convection
cell to measure the large scale flow structures in forced
convection. The technique is capable to capture the three-dimensional
instantaneous flow field in a measurement
volume. In order to validate the implementation of the
Tomographic PIV algorithm and to demonstrate that the
large scale flow structure in the convection cell can be
predicted properly, the data is compared to planar PIV
data.
The LST-PIV reveals the same global flow structure
as with planar PIV. The rms value of the difference
between the LST- and planar PIV data amounts to
0.0088 m/s whereas the volume averaged velocity in the
measurement volume is 0.11 m/s. However, small regions
exist in which the differences are as large as 0.0182 m/s. It
is concluded that the larger differences between the two
sets of data are mainly caused by the not yet fully
converged flow statistics and to a small extend by
disturbance of the inflow due to particle injection.