Title page for ETD etd-05022009-040418


Type of Document Master's Thesis
Author Hardman, Robert R.
URN etd-05022009-040418
Title Infrared imaging :a proposed validation technique for computational fluid dynamics codes used in STOVL applications
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Mahan, James Robert Committee Chair
O'Brien, Walter F. Jr. Committee Member
Thomas, James R. Jr. Committee Member
Keywords
  • Infrared imaging
Date of Defense 1990-05-05
Availability restricted
Abstract

The need for a validation technique for computational fluid dynamics (CFD) codes in STOVL applications has led to research efforts to apply infrared thermal imaging techniques to visualize gaseous flow fields. Specifically, a heated, free-jet test facility was constructed. The gaseous flow field of the jet exhaust was characterized using an infrared imaging technique in the 2 to 5.6μm wavelength band as well as conventional pitot tube and thermocouple methods. These infrared images are compared to computer-generated images using the equations of radiative exchange based on the temperature distribution in the jet exhaust measured with the thermocouple traverses. Temperature and velocity measurement techniques, infrared imaging, and the computer model of the infrared imaging technique are presented and discussed. From the study, it is concluded that infrared imaging techniques coupled with the radiative exchange equations applied to CFD models are a valid method to qualitatively verify CFD codes used in STOVL applications.

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