31 citations · 64 across the 16 of their papers we have counts for
7 papers · 1 filter
Identifying and tracking bubbles and drops in simulations: a toolbox for obtaining sizes, lineages, and breakup and coalescence statistics
Wai Hong Ronald Chan, Michael S. Dodd, Perry L. Johnson +1
Knowledge of bubble and drop size distributions in two-phase flows is important for characterizing a wide range of phenomena, including combustor ignition, sonar communication, and…
Shock-induced heating and transition to turbulence in a hypersonic boundary layer
Lin Fu, Michael Karp, Sanjeeb T. Bose +2
The interaction between an incident shock wave and a Mach-6 undisturbed hypersonic laminar boundary layer over a cold wall is addressed using direct numerical simulations (DNS) and…
General method for determining the boundary layer thickness in nonequilibrium flows
Kevin Patrick Griffin, Lin Fu, Parviz Moin
While the computation of the boundary-layer thickness is straightforward for canonical equilibrium flows, there are no established definitions for general non-equilibrium flows. In…
The turbulent bubble break-up cascade. Part 2. Numerical simulations of breaking waves
Wai Hong Ronald Chan, Perry L. Johnson, Parviz Moin +1
Breaking waves generate a distribution of bubble sizes that evolves over time. Knowledge of how this distribution evolves is of practical importance for maritime and climate studie…
The turbulent bubble break-up cascade. Part 1. Theoretical developments
Wai Hong Ronald Chan, Perry Johnson, Parviz Moin
Breaking waves entrain gas beneath the surface. The wave-breaking process energizes turbulent fluctuations that break bubbles in quick succession to generate a wide range of bubble…
On the evolution of the velocity gradient tensor in transitional boundary layers
Ahmed Elnahhas, Perry L. Johnson, Adrián Lozano-Durán +1
We study the transition to turbulence from the perspective of the velocity gradient tensor dynamics. Our work is motivated by the observation of nonlinear structures emerging durin…