Combination of PIV and PLIF methods to study convective heat transfer in an impinging jet

•Circular water jet impinging on a heated surface was studied.•Simultaneous velocity and temperature fields were measured by means of PIV and PLIF.•The algorithms to reduce the measurement error of PLIF method are proposed.•Turbulent heat flux was measured in a wall jet region.•Up to 25% of heat tra...

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Bibliographic Details
Published in:Experimental thermal and fluid science 2017-01, Vol.80, p.139-146
Main Authors: Nebuchinov, Alexandr S., Lozhkin, Yuriy A., Bilsky, Artur V., Markovich, Dmitriy M.
Format: Article
Language:English
Subjects:
Heat transfer
Impinging jet
PIV
PLIF
Turbulence
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Summary:•Circular water jet impinging on a heated surface was studied.•Simultaneous velocity and temperature fields were measured by means of PIV and PLIF.•The algorithms to reduce the measurement error of PLIF method are proposed.•Turbulent heat flux was measured in a wall jet region.•Up to 25% of heat transfer intensity is provided by a mechanism of turbulence. For simultaneous measurement of instantaneous fields of temperature and velocity in the near-wall areas of the impinging jet combination of PLIF and PIV methods is implemented. The algorithms to reduce the measurement error of PLIF method are proposed. Unsteady heat transfer in axisymmetric jet impinging normally onto the plane heated surface is experimentally investigated. The turbulent heat fluxes in the stagnation point region and self-similar region of the flow have been figured out. The intensity of turbulent heat transfer has been obtained. Up to 25% of heat transfer intensity is provided by a mechanism of turbulence.
ISSN:0894-1777
1879-2286
DOI:10.1016/j.expthermflusci.2016.08.009