Title page for ETD etd-01122007-115434


Type of Document Master's Thesis
Author Ewing, Jerrod Albert
URN etd-01122007-115434
Title Development of a Direct-Measurement Thin-Film Heat Flux Array
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Diller, Thomas E. Committee Co-Chair
Vlachos, Pavlos P. Committee Co-Chair
Huxtable, Scott T. Committee Member
Keywords
  • heat flux measurement
  • thin film heat flux gage
  • heat flux
Date of Defense 2006-12-11
Availability unrestricted
Abstract
A new thin film heat flux array (HFA) was designed and constructed using a series of nickel/copper thermocouples deposited onto a thin Kapton® polyimide film. The HFA is capable of withstanding temperatures up to 300 °C and produces signals of 42 μV/(W/cm2). As a result of its thin film construction, the HFA has a first order time constant of 32 ms. Calibrations were completed to determine the gage’s output as well as its time response. In order to measure the signal from the HFA amplifiers were designed to increase the magnitude of the voltage output. An example case is given where the HFA is used in an experiment to correlate time-resolved heat flux and velocities.
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