Title page for ETD etd-05022009-040418
|Type of Document
||Hardman, Robert R.
||Infrared imaging :a proposed validation technique for computational fluid dynamics codes used in STOVL applications
||Master of Science
|Mahan, James Robert
|O'Brien, Walter F. Jr.
|Thomas, James R. Jr.
|Date of Defense
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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