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A simple and accurate numerical network flow model for bionic micro heat exchangers

: Pieper, M.; Klein, P.


Heat and mass transfer 47 (2011), No.5, pp.491-503
ISSN: 0947-7411
ISSN: 0042-9929
Journal Article
Fraunhofer ITWM ()

Heat exchangers are often associated with drawbacks like a large pressure drop or a non-uniform flow distribution. Recent research shows that bionic structures can provide possible improvements. We considered a set of such structures that were designed with M. Hermann's FracTherm(A (R)) algorithm. In order to optimize and compare them with conventional heat exchangers, we developed a numerical method to determine their performance. We simulated the flow in the heat exchanger applying a network model and coupled these results with a finite volume method to determine the heat distribution in the heat exchanger.