Investigation of hypersonic nozzle flow uniformity using NO fluorescence |
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| Authors: | S O’Byrne P M Danehy A F P Houwing |
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| Institution: | (1) School of Aerospace, Civil and Mechanical Engineering, University of New South Wales, Australian Defence Force Academy, Canberra, 2600, Australia;(2) Advanced Sensing and Optical Measurement Branch, MS 493, NASA Langley Research Center, Hampton, 23681, VA, USA;(3) Department of Physics and Theoretical Physics, Australian National University, Canberra, 0200, Australia |
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| Abstract: | Planar laser-induced fluorescence visualisation is used to investigate nonuniformities in the flow of a hypersonic conical nozzle. Possible causes for the nonuniformity are outlined and investigated, and the problem is shown to be due to a small step at the nozzle throat. Entrainment of cold boundary layer gas is postulated as the cause of the signal nonuniformity.
PACS 47.80.Jk, 47.40.Ki, 47.60.+i |
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| Keywords: | Nozzle flow Fluorescence LIF Nozzle uniformity |
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