NODESIM-CFD Workshop on Quantification of CFD Uncertainties Comparison of Stochastic Collocation Methods for Uncertainty Quantification of the Transonic RAE 2822 Airfoil
نویسندگان
چکیده
Non–intrusive Simplex Elements Stochastic Collocation, Stochastic Collocation with Clenshaw–Curtis points, and the Padé–Legendre method are applied to the transonic RAE 2822 airfoil test case of the NODESIM Workshop on Quantification of CFD Uncertainties. Uncertainty in a combination of the free stream Mach number M∞, angle of attack α, and thickness–to–chord ratio t/c described by uniform and normal probability distributions is propagated to the mean, standard deviation, and probability density functions of the lift Cl, drag Cd, and pitching moment Cm coefficients. In addition the uncertainty bars on the mean surface pressure coefficient Cp, and the mean and standard deviation fields for the static pressure p are presented. The analysis of the relative importance of the random input parameters shows that the effect of none of the parameters is negligible compared to the other parameters for the considered outputs of interest.
منابع مشابه
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