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Direct numerical simulation turbulent mixing in the T-shaped microchannel

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1860
pages 1821-1824

A. V. Minakov
Siberian Federal University, Institute of Thermophysics of SB RAS, Baker Hughes Inc, 50/44 Akademgorodok, ICMSB RAS, TORINS, Krasnoyarsk, 660036; Novosibirsk State University, Novosibirsk, Russia

V. Ya. Rudyak
Siberian Federal University, Institute of Thermophysics of SB RAS, Baker Hughes Inc, 50/44 Akademgorodok, ICMSB RAS, TORINS, Krasnoyarsk, 660036

A. A. Dekterev
Institute of Thermophysics of SB RAS, Krasnoyarsk branch, 50/44 Akademgorodok, ICM SB RAS, TORINS, Krasnoyarsk, 660036; Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1 Akad. Lavrentiev Ave., Novosibirsk, 630090

A. A. Gavrilov
Institute of Thermophysics of SB RAS, Krasnoyarsk branch, 50/44 Akademgorodok, ICM SB RAS, TORINS, Krasnoyarsk, 660036; Institute of Thermophysics of SB RAS, Ac. Lavrentieva ave. 1, Novosibirsk, Russian Federation, 630090; Novosibirsk State University, Pirogova st., 2, Novosibirsk, Russian Federation, 630090

要約

Flow regimes and mixing performance in a T-type micromixer at high Reynolds numbers were studied by numerical solution of the Navier–Stokes equations. The Reynolds number was varied from one to one thousand. The cross section of the mixing channel was 100 μm×200 μm, and its length was 1400 μm. Five different flow regimes were identified: (i) stationary vortex-free flow (Re < 5); (ii) stationary symmetric vortex flow with two horseshoe vortices (5 < Re < 150); (iii) stationary asymmetric vortex flow (150 < Re < 240); (iv) nonstationary periodic flow (240 < Re < 400); (v) stochastic flow (Re > 400).

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