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The exergy framework presents an interesting complement to traditional drag extraction methods for the performance evaluation of aerodynamic devices. On the one hand it remains valid for novel configurations for which no thrust/drag distinction is applicable (e.g. Boundary Layer Ingestion), while it can also account for the influence of thermal effects. At the same time, it can provide an additional understanding on the physical phenomena occuring within the flowfield and their interactions, via the destruction of exergy or its transfer from one form to another. The present work aims at providing a further insight into some numerical aspects of the exergy balance approach. A strategy towards the limitation of some of its sensitivities is also presented. This specifically addresses the quantification of spurious generation of anergy, which is directly associated to the spurious generation of entropy in numerical computations.

Numerical investigations of the exergy balance method for aerodynamic performance evaluation