Optical study of a light diaphragm rupture process in an expansion tube

摘要: Abstract. Rupture of a light cellophane diaphragm in an expansion tube has been studied by optical method. The influence the on test flow generation long recognised, however rupture mechanism is less well known. It previously postulated that ruptures around its periphery due to dynamic pressure loading shock wave, with material at some stage being removed from allow accelerate measured speeds downstream. images obtained this series experiments are first show and mass removal tube. A was impulsively loaded via wave recorded holographically throughout process, showing gradual destruction diaphragm. Features such as material, interface between gases, reflected were clearly visualised. Both qualitative quantitative aspects dynamics derived compared existing one-dimensional theory.