Numerical simulation of microchannel network with complex geometry

• Autorzy: Niklas M. , Favre-Marinet M. , Asendrych D.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of a numerical study devoted to the hydraulic properties of a network of parallel triangular microchannels (hydraulic diameter Dh = 110 [mi]m). Previous experimental investigations had revealed that pressure drop through the microchannels system dramatically increases for the Reynolds number exceeding value of 10. The disagreement of the experimental findings with the estimations of flow resistance based on the assumption of fully developed flow were suspected to result tram the so-called scale effect. Numerical simulations were performed by using the classical system of flow equations (continuity and Navier-Stokes equations) in order to explain the observed discrepancies. The calculations showed a very good agreement with the experimental results proving that there is no scale effect for !he rnicrochannels considered, i.e. the relevance of the constitutive flow model applied was confirmed. It was also clearly indicated that the excessive pressure losses in the high Reynolds number range are due to the secondary flows and separations appearing in several regions of the microchannel system.

Słowa kluczowe

EN

integrated circuits; cooling systems; microchannels; flow resistance

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2005
• Tom: Vol. 53, nr 4
• Strony: 351--359
• Opis fizyczny: Bibliogr. 15 poz. , 20 rys.

Twórcy

autor

Niklas M.

autor

Favre-Marinet M.

autor

Asendrych D.

• Institute ofThermal Machinery, Częstochowa University of Technology, 21 Armii Krajowej Ave, 42-200 Częstochowa, Poland,

Bibliografia

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