Stability analysis of thermo-acoustic nonlinear eigenproblems in annular combustors. Part II. Uncertainty quantification

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• 作者：Luca Magri^a ; ^b ; ^{lmagri@stanford.edu" class="auth_mail" title="E-mail the corresponding author} ; Michael Bauerheim^c ; Franck Nicoud^d ; Matthew P. Juniper^b
• 关键词：Thermo-acoustic stability ; Uncertainty quantification ; Annular combustors ; Adjoint methods
• 刊名：Journal of Computational Physics
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：325
• 期：Complete
• 页码：411-421
• 全文大小：2216 K

文摘

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.