On laminar-turbulent transition in nanofluid flows
V.Ya. Rudyak1, A.V. Minakov1,2,3, D.V. Guzey1,2, V.A. Zhigarev2, and M.I. Pryazhnikov1,2
1Novosibirsk State University of Architecture and Civil Engineering, Novosibirsk, Russia
2Siberian Federal University, Novosibirsk, Russia
3Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
E-mail: valery.rudyak@mail.ru
Keywords: nanofluid, laminar-turbulent transition, nanoparticles, flow in pipe, hydrodynamic resistance, viscosity
Pages: 773–776
Abstract
The paper presents experimental data on the laminar-turbulent transition in the nanofluid flow in the pipe. The transition in the flows of such fluids is shown to have lower Reynolds numbers than in the base fluid. The degree of the flow destabilization increases with an increase in concentration of nanoparticles and a decrease in their size. On the other hand, in the turbulent flow regime, the presence of particles in the flow leads to the suppression of small-scale turbulent fluctuations. The correlation of the measured viscosity coefficient of considered nanofluids is presented.
DOI: 10.1134/S0869864316050164
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