DOI: 10.1615/ICHMT.1996.TransientConvHeatTransf
ISBN Print: 978-1-56700-084-9
FINITE ELEMENT MODELLING OF INCOMPRESSIBLE THERMO-CONVECTIVE FLOWS
摘要
Thermocapillary flow induced by a gas bubble in a silicone oil layer submitted to a vertical temperature gradient is investigated numerically. A bidimensional model based on finite element method has been developped. It enables simulations of laminar flows induced by a surface tension gradient. Different configurations are selected: Marangoni convection acting alone, natural convection type Rayleigh Benard, Marangoni convection acting against gravity... The velocity and temperature fields are computed in a vertical cross section. The combined effects of gravity and thermocapillarity are studied. Numerical results are compared with experimental measurements obtained in a previous experiment.