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FDA's nozzle numerical simulation challenge: non-Newtonian fluid effects and blood damage
Miquel Trias1, Antonio Arbona1, Joan Massó1
1The Institute of Applied Computing & Community Code (IAC3), University of the Balearic Islands, Palma, Spain.
Abstract:
Data from FDA's nozzle challenge-a study to assess the suitability of simulating fluid flow in an idealized medical device-is used to validate the simulations obtained from a numerical, finite-differences code. Various physiological indicators are computed and compared with experimental data from three different laboratories, getting a very good agreement. Special care is taken with the derivation of blood damage (hemolysis). The paper is focused on the laminar regime, in order to investigate non-Newtonian effects (non-constant fluid viscosity). The code can deal with these effects with just a small extra computational cost, improving Newtonian estimations up to a ten percent. The relevance of non-Newtonian effects for hemolysis parameters is discussed.
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