Implicit large eddy simulation of shock-driven material mixing | Zendy

Fernando F. Grinstein | Zendy; Akshay Gowardhan | Zendy; J. R. Ristorcelli | Zendy

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Implicit large eddy simulation of shock-driven material mixing

Author(s) -

Fernando F. Grinstein,

Akshay Gowardhan,

J. R. Ristorcelli

Publication year - 2013

Publication title -

philosophical transactions of the royal society a mathematical physical and engineering sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.074

H-Index - 169

eISSN - 1471-2962

pISSN - 1364-503X

DOI - 10.1098/rsta.2012.0217

Subject(s) - turbulence , mechanics , mixing (physics) , predictability , large eddy simulation , shock (circulatory) , context (archaeology) , statistical physics , flow (mathematics) , planar , shock tube , classical mechanics , physics , computer science , shock wave , geology , medicine , paleontology , computer graphics (images) , quantum mechanics

Under-resolved computer simulations are typically unavoidable in practical turbulent flow applications exhibiting extreme geometrical complexity and a broad range of length and time scales. An important unsettled issue is whether filtered-out and subgrid spatial scales can significantly alter the evolution of resolved larger scales of motion and practical flow integral measures. Predictability issues in implicit large eddy simulation of under-resolved mixing of material scalars driven by under-resolved velocity fields and initial conditions are discussed in the context of shock-driven turbulent mixing. The particular focus is on effects of resolved spectral content and interfacial morphology of initial conditions on transitional and late-time turbulent mixing in the fundamental planar shock-tube configuration.

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