Stability analysis of thermo-acoustic nonlinear eigenproblems in annular combustors. Part II. Uncertainty quantification
Résumé
Monte Carlo and Active Subspace Identification methods are combined with
first- and second-order adjoint sensitivities to perform (forward) uncertainty
quantification analysis of the thermo-acoustic stability of two annular combustor
configurations. This method is applied to evaluate the risk factor, i.e., the
probability for the system to be unstable. It is shown that the adjoint approach
reduces the number of nonlinear-eigenproblem calculations by as much as the
Monte Carlo samples.
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