White in time scalar advection model as a tool for solving joint composition PDF equations. (English) Zbl 1109.76027
Summary: A rapidly decorrelating velocity field model is used to derive stochastic partial differential equations (SPDE) allowing one to compute the modeled one-point joint probability density function of turbulent reactive scalars. Those SPDEs are shown to be hyperbolic advection/reaction equations. They are dealt with in a generalized sense, so that discontinuities in the scalar fields can be treated. The Eulerian Monte Carlo method thus defined is coupled with a RANS solver and applied to the computation of turbulent premixed methane flame over a backward facing step.
MSC:
| 76F55 | Statistical turbulence modeling |
| 76M35 | Stochastic analysis applied to problems in fluid mechanics |
| 76V05 | Reaction effects in flows |
Keywords:
decorrelating velocity field model; probability density function; Eulerian Monte Carlo methodReferences:
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