Abstract
In present paper, the mathematic background of intrusive polynomial chaos (IPC) method and coupling process with one dimension Euler equation were introduced. The IPC method was implemented for the 2D compressible stochastic Navier-Stokes equations to simulate the non-deterministic behavior of a lid driven cavity flow under the influence of uncertainties. The driven velocity and fluid viscosity were supposed respectively to be the uncertain variable which has Gaussian probability distribution. Based on the validation with benchmark results, discussions were mainly focused on the statistic properties of velocity distribution. The results indicated the effect of IPC method on the simulation of propagation of uncertainty in the flow field. For the simulated results of 2D cavity flow, influence of the driven velocity uncertainty is larger than that of viscosity.
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Wang, X., Kang, S. Application of polynomial chaos on numerical simulation of stochastic cavity flow. Sci. China Technol. Sci. 53, 2853–2861 (2010). https://doi.org/10.1007/s11431-010-4097-y
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DOI: https://doi.org/10.1007/s11431-010-4097-y