Self-Excited Shock Oscillation in Transonic Diffuser Flows. 2nd Report. Spectral Distribution and Peak Frequency of Oscillation.

太郎, 半田; 義昭, 宮里; 光治, 益田; 一泰, 松尾

doi:10.1299/kikaib.66.1345

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The Frequencies of Self-Excited Shock Wave Oscillation on a 2D Symmetrical Circular-Arc Airfoil in Internal Transonic Flow(Fluids Engineering)

Shiratori

Shimada

Matsushita³

2009

Trans.JSME, Ser.B

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An experimental studyhasbcen carried 〔川 t te investlgate the self − excitcd shock wav 巳 osciUation on a 2D sy エn 皿 etrical circular − arc airfoil in internal transo エ lic fi (〕 w ， and a new Clctermination modcl of the sllock wave oscillation frcquency is proPused ． Shock wave p り sitions are meas しlred by using schlie τ ℃ n upticaT systenn and t刃vo ・ lirle scan camerus 、 The result sh 〔〕ws that the phase differencc between shock wave position HucしuatiQns of each side ure alrnos し 18｛｝ degrees、 alld (， scillati 〔m fl 『 equencies call be suc じessfully estimated by the pr 〔〕Posed 〔｝ etcrmination rn 〔， del、 In 亡 his model ， it is ulniosL equal to the experiment valuc to set tl ユc charac し eristic puint as Xb − 1， 5． Key IVords ： Sh 〔〕 ck Wave ， Oscillation ， Frequency ， Airfoil ， Transonic Fluw． Internal FI〔， w

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