MATEC Web Conf.
Volume 84, 2016International Symposium and School of Young Scientists “Interfacial Phenomena and Heat Transfer” (IPHT 2016)
|Number of page(s)||5|
|Published online||16 November 2016|
Modelling of the joint motion of nonisothermal liquid film and gas flow in a microchannel: numerical simulation of full Navier-Stokes equations
1 Lavrentyev Institute of Hydrodynamics, SB RAS, 630090, 15 Lavrentyev prosp., Novosibirsk, Russia
2 Institute of Thermophysics, SB RAS, 630090, 1 Lavrentyev prosp., Novosibirsk, Russia
a Corresponding author: firstname.lastname@example.org
New full-statement 3D mathematical model of joint motion of thin liquid film and gas in a microchannel at local heating developed by taking into account the heat transfer by flows, evaporation and condensation, as well as the heat transfer at the gas-liquid interface is derived. The model is based on the full system of the Navier-Stokes equations, taking into account the convective terms of motion equations in the phases. Comparison of the numerical results obtained using the model based on the full Navier-Stokes equations and using the simplified model developed in the framework of the thin layer approximation has been performed. The comparison shows that at low Reynolds numbers, simplified model well describes all the main characteristics of the gas and liquid motion. With the gas Reynolds numbers significant increase difference between numerical results starts to grow.
© The Authors, published by EDP Sciences, 2016
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