| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 659524 | International Journal of Heat and Mass Transfer | 2011 | 8 Pages |
Abstract
An advanced optical technique based on digital version of μ-PIV and speckle technologies has been applied for flow microstructure analysis in a semi-transparent model of a PEM fuel cell. The line-of-sight speckle photography has been used for quantitative measurements of the instantaneous temperature fields in 3D unsteady flows. Using μ-PIV, the sequence of flow images has been visualised by micro-particles. The images obtained have been evaluated then by cross-correlation and autocorrelation techniques and instantaneous temperature, velocity and vorticity maps have been obtained with sub-millimeter spatial resolution. Up to 250,000 quantitative velocity vectors are reconstructed simultaneously using one digitally recorded specklogram.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
N.B. Bazylev, N.A. Fomin, H. Galiano, O.V. Meleeva, S. Martemianov, O.G. Penyazkov,