30 March 2000 Two-dimensional and dynamic (2DD) method of visualization of the flow characteristics in a convection boundary layer using infrared thermography
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Abstract
The paper presents the 2D and dynamic (2DD) method of using infrared (IR) thermography for the visualization of the cooling efficiency of a heated wall, as this method was applied in an experimental investigation. The 2DD method allows the outer surface temperature measured by the IR thermography device to be worked out relative to the bulk coolant-fluid temperature. In this way the 2DD method makes visible the qualitative and quantitative flow characteristics within the thin contact layers at the inner surface of the wall. This flow characteristics, and more specifically the pattern of stream lines (for the detection of dead zones) and the distribution of the temperature differences between the temperature on the window outer surface and the bulk temperature of the coolant, determine the cooling efficiency. Finally animated IR thermogram sequences could be generated, allowing the spatial and temporal behavior of the flow/cooling behind the wall to be observe.
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Jacek Adam Patorski, Guenter S. Bauer, Sergei Dementjev, "Two-dimensional and dynamic (2DD) method of visualization of the flow characteristics in a convection boundary layer using infrared thermography", Proc. SPIE 4020, Thermosense XXII, (30 March 2000); doi: 10.1117/12.381554; https://doi.org/10.1117/12.381554
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