Eighth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP8
NAVIER-STOKES SIMULATION WITH FLUID PARTICLES LOCATION UNCERTAINTY
pages 1-6
DOI: 10.1615/TSFP8.900
要約
We present simulation results of a stochastic Navier-Stokes model that incorporates uncertainty on the fluid parcels location. This model ensues from a decomposition of the flow in terms of a differentiable drift component and a time uncorrelated uncertainty random term. The dynamics associated to the drift component, derived from a stochastic version of the Reynolds transport theorem, includes in its general form an uncertainty dependent anisotropic diffusion that cannot be immediately related to usual eddy viscosity assumption. The simulation we present relies on a wavelet numerical scheme and is here experimented on a Green-Taylor vortex.