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Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
Published on: October 5, 2018
Phase-field model for Marangoni convection in liquid-gas systems with a deformable interface
Rodica Borcia1, Michael Bestehorn
1Lehrstuhl für Theoretische Physik II, Brandenburgische Technische Universität Cottbus, Cottbus, Germany. borcia@physik.tu-cottbus.de
Abstract:
We developed a phase-field model for Marangoni convection in a liquid-gas system with a deformable interface, heated from below. In order to describe both Marangoni instabilities (with short and long wavelengths), an additional force component must be considered in the Navier-Stokes equation. This term describes the coupling of the temperature to the velocity field via the phase-field function. It results by minimizing the free-energy functional of the system. For a bidimensional problem in linear approximation we performed a numerical code that successfully computes both Marangoni instabilities. In the limit of sharp and rigid interfaces, our results are compared with the literature.
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