Development and Application of a Technique for Steady State Aerodynamic Heat Transfer Measurements

Author: Hartwig, Frederic William

Year: 1957

Degree: Dissertation (Ph.D.)

Advisor: Lees, Lester

Committee Member: Unknown, Unknown

Option: Aeronautics; Mathematics

DOI: 10.7907/Y2JY-A341

Abstract

A technique was developed for measuring steady state heat transfer on a hemisphere cylinder and the results are compared with theory. The instrumentation consisted of a miniaturized thermopile of silver-constantan thermocouples approximately 1/8" x 1/16" x 1/100". The repeatability of readings with this device was found to be excellent. These heat measuring devices, or heat meters, were installed in both a ceramic hemisphere cylinder and in a similar metal one. There were obtained three different heat flow rates at each of six different combinations of tunnel pressure and temperature.

The results compared very well with a theory developed by Lester Lees based upon the assumption of local similarity.

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