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- W2530403068 abstract "Tie Wei, Daniel Livescu, CCS-2 Rayleigh-Taylor instability (RTI) with tilted initial interface is investigated using Direct Numerical Simulation (DNS). Due to the novel nature of this flow and its importance in turbulence modeling, our simulations are also being proposed as a standard test problem for LANL codes. Our DNS results compare well with laboratory experiments for appropriately chosen initial conditions, both qualitatively and quantitatively. In general, this is a non-trivial task as there is a long-standing discrepancy between the experimental and previous numerical results of RTI-related problems. We find that the global motions in tilted RTI can be decomposed into three components: 1) rotation (overturning) of the interior interface, 2) mixing of the interior interface, and 3) development of side-wall bubble/spike. The fundamental dynamics and scaling of each component have been determined. The effects of initial conditions have also been identified." @default.
- W2530403068 created "2016-10-21" @default.
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- W2530403068 date "2011-11-17" @default.
- W2530403068 modified "2023-09-25" @default.
- W2530403068 title "Direct numerical simulation of tilted Rayleigh-Taylor instability" @default.
- W2530403068 hasPublicationYear "2011" @default.
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