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Long-Lasting Effect Of Initial Configuration In Gravitational Spreading Of Material Fronts, Nadim Zgheib, Thomas Bonometti, S. Balachandar
Long-Lasting Effect Of Initial Configuration In Gravitational Spreading Of Material Fronts, Nadim Zgheib, Thomas Bonometti, S. Balachandar
Mechanical Engineering Faculty Publications and Presentations
We present the results from laboratory experiments and fully resolved simulations pertaining to finite-release turbulent density flows with a non-axisymmetric initial shape. First, we demonstrate that the effects of the initial shape influence the current’s evolution well into the long-time phase which would corresponds to the inertial self-similar phase in the case of planar or axisymmetric configurations. Then, we identify the physical mechanisms responsible for this dependence and propose a new model capable of capturing the dynamics of such releases. Finally, we show that this dependence on the initial configuration is robust for various types of gravity currents over a …