Skip to Main Content
ASME Press Select Proceedings

Proceedings of the 10th International Symposium on Cavitation (CAV2018)

Editor
Joseph Katz
Joseph Katz
Search for other works by this author on:
ISBN:
9780791861851
No. of Pages:
1108
Publisher:
ASME Press
Publication date:
2018

We investigate numerically the effect of non-condensable gas inside a vapor bubble on the bubble dynamics and the collapse pressure. Free gas in the vapor bubble has a cushioning effect that can weaken the pressure wave and enhance the bubble rebound. In order to access this effect numerically, simulations of collapsing vapor bubbles containing non-condensable gas are performed. In the simulations, the effects of the gas on the rebound and the shockwave energy are monitored for different operating points with varying initial gas contents pg,0 inside the bubble and driving pressures Δp. For the cavitating liquid and the non-condensable gas we employ a homogeneous mixture model with a coupled equation of state for all components and the cavitation model is a barotropic thermodynamic equilibrium model, which is embedded in a higher order implicit large eddy approach for narrow stencils. Compressibility of all phases is considered, to capture the shockwave of the bubble collapse. The effect of the free gas on the rebound and the dampening of the emitted shockwave by the gas contained in the bubble are well captured by our simulations.

Introduction
Thermodynamic Model
Numerical Method
Setup
Results
Conclusion
References
This content is only available via PDF.
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal