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A parallel and matrix free framework for global stability analysis of compressible flows

An numerical iterative framework for global modal stability analysis of compressible flows using a parallel environment is presented. The framework uses a matrix-free implementation to allow computations of large scale problems. Various methods are tested with regard to convergence acceleration of the framework. The methods consist of a spectral Cayley transformation used to select desired Eigenvalues from a large spectrum, an improved linear solver and a parallel block-Jacobi preconditioning scheme.

preprint2015arXivOpen access
O. HenzeM. LemkeJ. Sesterhenn
math.NAphysics.flu-dyn
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O. HenzeM. LemkeJ. Sesterhenn

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