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Advances in Heat Transfer Engineering

ISSN:
1-56700-198-1 (Print)

QUASI-REAL TIME HEAT TRANSFER CHARACTERIZATION BY DIGITAL DYNAMIC LASER SPECKLE PHOTOGRAPHY

Nikolai Bazylev
Heat and Mass Transfer Institute, 15, P. Brovki, Minsk, 220072, Belarus

Nikita A. Fomin
Laboratory of Physical-Chemical Hydrodynamics, Department of Physics and Chemistry of Nonequilibrium Media, A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk, Belarus

Elena Lavinskaya
Heat and Mass Transfer Institute, 15, P. Brovki, Minsk, 220072, Belarus

Abstract

The method of digital dynamic laser speckle photography is described. Mathematical technique of local parameters reconstruction in 3D turbulent flows is discussed and accuracy of such reconstruction is analysed. An example of flow fields reconstructed in quasi-real time operation mode are given. The flow is a convective zone above an open turbulent flame.