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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

AHALYSIS OF A LOCAL HEAT FLUX PROBE

Get access (open in a dialog) DOI: 10.1615/IHTC8.2520
pages 467-472

摘要

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.