ISSN Online: 2377-424X
ISBN Print: 0-89116-559-2
International Heat Transfer Conference 8
AHALYSIS OF A LOCAL HEAT FLUX PROBE
Abstrakt
A two-dimensional transient numerical analysis for a dynamic heat flux probe was formulated. The probe consisted of a metallic film sensor deposited onto a substrate and covered by a thin protective coating. A systematic study of the effects of the probe design on its thermal response is reported. This study considered the probe to be mounted in an isothermal wall in contact with a heat transfer environment; the isothermal film sensor was maintained at the wall temperature.
Probe sensitivity was found to depend on probe design and material properties. Steady state results included a nondimensional relationship between heat transfer coefficient and sensor power, and probe effective area. Appropriate choice of materials yielded an essentially constant effective probe area for a wide range of heat flux. Probe response was found to be directly related to probe geometry. An experimental demonstration indicated the effect of material properties on probe response.
Probe sensitivity was found to depend on probe design and material properties. Steady state results included a nondimensional relationship between heat transfer coefficient and sensor power, and probe effective area. Appropriate choice of materials yielded an essentially constant effective probe area for a wide range of heat flux. Probe response was found to be directly related to probe geometry. An experimental demonstration indicated the effect of material properties on probe response.