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

Bazylev, Nikolai; Fomin, Nikita A.; Lavinskaya, Elena

Advances in Heat Transfer Engineering

ISBN Druckformat: 1-56700-198-1

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

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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

Abstrakt

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.

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