Traditional adjoint variables grow exponentially for turbulent chaotic flows. Most proposed methods (for example. ensemble adjoint, shadow-based, and unstable-subspace-based approaches, etc.) are computationally prohibitive for practical problems. In the current paper, we evaluate a stabilization approach for the adjoints of turbulent flows, which is computationally cheap compared to the previously mentioned methods. The stabilization method is motivated by studying the adjoint-energy budget. The resulting adjoint and the parameter sensitivity from the current approach are then compared with the shadow adjoint approach for the minimal flow unit.
Stabilization of the Adjoint for Turbulent Flows
AIAA Journal ; 59 , 6 ; 2001-2013
2021-06-01
Article (Journal)
Electronic Resource
English
ADJOINT BASED TECHNIQUES FOR UNCERTAINTY QUANTIFICATION IN TURBULENT FLOWS WITH COMBUSTION
British Library Conference Proceedings | 2012
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