Spectral Analysis of Turbulent Bubbly Flows based on Direct Numerical Simulation

摘要

Spectral analysis of state-of-the-art DNS of single-phasernturbulent channel flow has been performed andrnconsistency with well-known -5/3 law has beenrndemonstrated. Two-phase bubbly flow is analyzed tornevaluate the change of the turbulent spectrum under therninfluence of bubbles. Future work will include a widerrnrange of bubble void fractions, bubble size and turbulentReynolds numbers. The detailed information about twophasernturbulence will guide the development of newrngeneration of CMFD models.