A preliminary experimental study was made to determine the behavior of an air bubble subsequent to the impingement of a shock wave or sharp pressure front upon it. An observed feature of the motion is the formation of a liquid jet similar to those created during the detonation of a shaped explosive charge. Two types of bubbles were observed. One is a long air bubble rising in a shock tube partially filled with water. As first shown by G.I. Taylor the upper interface is nearly spherical. The other is a nearly spherical bubble. Jets are observed in both cases and therefore indicate the need to consider this phenomenon in cavitation damage and cavitation hysteresis studies. In view of the significant effects of very dilute solutions of long chain molecules on cavitation, work on a short pulse duration argon laser was done which shows promise as a means of obtaining holographic information on the dynamic behavior of these molecular groups. Operating pressure of the argon gas is found to be important for short optical pulse generation. Methods of obtaining the holograms pertinent to this application are discussed. (Author).

A series of experiments have been carried out to study shock-initiated combustion in a converging lens geometry. For heavy gas bubbles, the acoustic impedance mismatch results in a focusing of the transmitted shock wave known as the shock focusing phenomenon. The increase in temperature and pressure that result from this phenomenon are used to ignite a combustible gas mixture near the downstream pole of the bubble. The characteristics of the ignition and propagation of the reaction front are studied experimentally in conjunction with the hydrodynamic bubble morphology. The experiments cover a range of incident shock wave Mach numbers (1.35

Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.