fnctId=thesis,fnctNo=14
Numerical investigation of laser-induced cavitation bubble dynamics near a rigid surface based on three-dimensional fully compressible model
- 링크
- https://doi.org/10.1016/j.ijheatmasstransfer.2022.122853
- 작성자
- 김동현
- 저자
- Seong-Ho Park, Thanh-Hoang Phan, Warn-Gyu Park
- 발행사항
- International Journal of Heat and Mass Transfer
- 발행일
- 2022-04(SCI)
- 국문초록
- 영문초록
- Cavitation bubble dynamics include the releasing shock wave, violent jet impact, and extremely local high temperature at the collapse phase. Notably, in the case of a bubble collapsing near a rigid boundary, a high-velocity microjet toward structure is an important issue and significantly related to various engineering fields. A fully compressible mixture model based on the three-dimensional Navier-Stokes equation was used for numerical simulation of laser-induced single bubble dynamics near a rigid surface. Beside, a preconditioned dual-time stepping method and high-resolution interface capturing scheme were coupled with the numerical model for the stability and high-accuracy of simulation. The numerical results were validated by comparing with experimental data and good agreements were achieved. In near-field bubble dynamics, length scale dimensionless parameter is strongly affecting its behavior. Thus, the aspect ratio, jet velocity, wall impact pressure, and peak temperature were discussed in detail based on bubble behavior under different standoffs. Finally, we suggested the critical standoff for wall impact pressure and the maximum temperature.
- 일반텍스트
- 첨부파일