Abbreviated Journal Title
RAYLEIGH-TAYLOR INSTABILITY; EXCHANGE FLOW-THROUGH; NATURAL-CONVECTION; BENARD CONVECTION; ROTATING CYLINDER; HEAT REMOVAL; MODELS; TURBULENCE; DYNAMICS; NUMBER; Mechanics; Physics, Fluids & Plasmas
The dynamics of the transient, two-dimensional buoyancy driven thermal mixing of two fluid masses at different temperatures, initially at rest and confined to separate portions of a horizontally partitioned adiabatic enclosure, is investigated numerically within the framework of the Boussinesq approximation. The fluids are allowed to mix through a centrally located opening or vent in the partition. Apart from the geometric parameters, the dynamics is governed by the Rayleigh (Ra) and Prandtl (Pr) numbers. Spanning the range 500 5000, there exists a vortex trapped in the vent for a significant length of time, preventing the two fluid masses to mix directly, thereby slowing down the overall mixing rate in comparison to the flows for Ra < = 5000.
Physics of Fluids
Mishra, Aashwin A.; Hasan, Nadeem; Sanghi, Sanjeev; and Kumar, Ranganathan, "Two-dimensional buoyancy driven thermal mixing in a horizontally partitioned adiabatic enclosure" (2008). Faculty Bibliography 2000s. 732.