Numerical prediction of small scale cavities using a coupled mixture-bubble model
Paper in proceedings, 2019

In this study a hybrid Eulerian mixture - Lagrangian bubble model is developed for numerical simulation of cavitating flows. In this model, the large scale cavities are represented in the Eulerian framework using the homogeneous mixture model, while the small sub-grid structures are tracked as Lagrangian bubbles. Also, at each time step small cavity structures in the Eulerian framework are transformed to the Lagrangian framework to be treated as sub-grid bubbles and vice versa. Using this model, it is possible to represent various cavity structures of different length scales with reasonable computational cost.

Multi-scale model

Cavitation

Eulerian-Lagrangian model

Homogeneous mixture model

Author

Ebrahim Ghahramani

Chalmers, Mechanics and Maritime Sciences, Marine Technology

Rickard Bensow

Chalmers, Mechanics and Maritime Sciences, Marine Technology

10th International Conference on Multiphase Flow, ICMF 2019
Rio de Janeiro, Brazil,

Development and experimental validation of computational models for cavitating flows, surface erosion damage and material loss (CaFE)

European Commission (Horizon 2020), 2015-01-01 -- 2019-01-01.

Areas of Advance

Transport

Subject Categories

Applied Mechanics

Fluid Mechanics and Acoustics

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

More information

Created

6/11/2019