LES of bubble dynamics in wake flows. (English) Zbl 1098.76557
Summary: We present the results of large eddy simulations (LES) of turbulent bubbly wake flows. The LES technique was applied together with Lagrangian particle dynamics method and a random flow generation (RFG) technique to a two-phase bubbly mixing layer and to high-Reynolds number bubbly ship-wake flows. The validation was performed using experimental data for the bubbly mixing layer. Instantaneous distributions and probability density functions of bubbles in the wake were obtained using a joint LES/RFG approach. Separate estimates of bubble decay due to dissolution and buoyancy effects were obtained. The analysis of bubble agglomeration effects was done on the basis of experimental data for a turbulent vortex to satisfy one-way coupling that is used in this study.
MSC:
| 76F65 | Direct numerical and large eddy simulation of turbulence |
| 76F25 | Turbulent transport, mixing |
| 76T10 | Liquid-gas two-phase flows, bubbly flows |
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