Pulse pressure loading and erosion pattern of cavitating jet

Effect of Injection Pressure and Size of Nozzle Throat of a Cavitating Jet on Cavitation Peening

Abstract Cavitation peening is a peening method using impacts at cavitation bubble collapses generated by a cavitating jet. In order to introduce compressive residual stress avoiding damage on the peened surface, residual stress of stainless steel was investigated at various cavitating conditions. It was revealed that the large cavitating jet at low injection pressure such as 30 MPa can introdu...

Re-entrant Jet Modelling for Partially Cavitating Two-dimensional Hydrofoils

The computational analysis of partial sheet hydrofoil cavitation in two dimensions is performed. Particular attention is given to the method of simulating the flow at the end of the cavity. A fixed-length partially cavitating panel method is used to predict the height of the re-entrant jet, using the values of the cavitation number and the drag coefficient. The jet surface is subsequently const...

Frequency Modulation and Erosion Performance of a Self-Resonating Jet

The self-resonating water jet offers the advantages of both a cavitation jet and a pulsed jet, and thus has been widely used for many practical applications. In the present study, the 120◦ -impinging edge Helmholtz nozzle was investigated for better erosion performance. The oscillating mechanism was analyzed from both numerical and experimental perspectives. The results showed that the cavitati...

Pulse–pressure loading effects on aviation and general engineering structures—review

This paper reviews various aspects of modeling an explosion on an aircraft, which can be extended to more general structures. A brief summary of material and structural models is given, followed by a detailed history of pulse–pressure loading models with an emphasis on free–free beams and how pulse characteristics affect a structure’s response. Techniques to desensitize pulse shape effects are ...

Pulse pressure and microvessels.