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Hybrid spectral-particle method for the turbulent transport of a passive scalar

Abstract : This paper describes a novel hybrid method, combining a spectral and a particle method, to simulate the turbulent transport of a passive scalar. The method is studied from the point of view of accuracy and numerical cost. It leads to a significative speed up over more conventional grid-based methods and allows to address challenging Schmidt numbers. In particular, theoretical predictions of universal scaling in forced homogeneous turbulence are recovered for a wide range of Schmidt numbers for large, intermediate and small scales of the scalar.
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https://hal.archives-ouvertes.fr/hal-00935487
Contributor : Georges-Henri Cottet Connect in order to contact the contributor
Submitted on : Thursday, January 30, 2014 - 10:27:41 AM
Last modification on : Wednesday, October 20, 2021 - 12:58:12 AM
Long-term archiving on: : Saturday, April 8, 2017 - 10:13:07 PM

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Jean-Baptiste Lagaert, Guillaume Balarac, Georges-Henri Cottet. Hybrid spectral-particle method for the turbulent transport of a passive scalar. Journal of Computational Physics, Elsevier, 2014, 260, pp.127-142. ⟨10.1016/j.jcp.2013.12.026⟩. ⟨hal-00935487⟩

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