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- Title
SHOCK EXCURSION IN TRANSONIC CONVEX-CORNER FLOWS.
- Authors
CHUNG, KUNG-MING; CHANG, PO-HSIUNG; CHANG, KEH-CHIN
- Abstract
A typical feature on a transonic airfoil is associated with a quasi-normal shock on the upper surface. When a shock is strong enough, development of a separation bubble changes the flowfield significantly. High intensity of pressure fluctuations is associated with unsteady shock wave. An experimental study was conducted to investigate transonic convex-corner flows, including single- and round-convex corners. Peak pressure fluctuations and zero-crossing frequency are associated with incoming Mach number, total turning angle, and separation length. In the cases of R100 and R200, the level of zero-crossing frequency decreases with increasing turning angle as observed in the single convex-corner flows. An increase in the level of pressure fluctuations corresponds to lower zero-cross frequency. In the cases of R300, there is a roughly constant level of surface pressure fluctuations or the variation of pressure fluctuations with the turning angle is less significant. The zero-crossing frequency would be independent of turning angle in the cases of R300.
- Publication
International Journal of Modern Physics: Conference Series, 2016, Vol 42, p-1
- ISSN
2010-1945
- Publication type
Article
- DOI
10.1142/S2010194516601800