反射衝撃波と非定常噴流の干渉に関する研究 : 第1報、反射衝撃波の挙動

概要

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Nitrogen or hydrogen gas is set to spurt from a small circular hole located at the endplate of shock tube at about 0〜9 ms before the shock wave arrives and reflects there. Interacting with the jet the reflected shock wave changes its shape from a plane shock wave to a curved one. We observed the phenomenon by the use of a schlieren system, time counters and pressure gauges. The results of the observation are as follows : (1) It is confirmed that an unstable, curved, reflected shock wave turns back to a stable plane shock wave within 0.1 ms. (2) The pressure and the temperature values behind the reflected shock wave derived from its distance-time relation show a certain amount of jump, which indicates the amount of the interaction between the spurting gas and the shock wave. (3) It is seen that hydrogen jet starts to burn at about 500〜600μ s after the shock reflection is taken place.
社団法人日本機械学会の論文
1984-10-25