caa a22 4500 469040467 CHVBK 20180323132809.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF02653205 doi (NATIONALLICENCE)springer-10.1007/BF02653205 Lu Wen-Qiang Department of Physics, Graduate School, Academia Sinica, P.O. Box 3908, 100039, Beijing, China aut Simulation of thermocapillary convection in a two-layer immiscible fluid system using a boundary element method [Elektronische Daten] [Wen-Qiang Lu] A boundary element method for simulating thermocapillary convection in a two-layer immiscible fluid system with flat and free interface has been developed. The divergence theorem is applied to the non-linear convective volume integral of the boundary element formulation with the pressure penalty function. Consequently, velocity gradients are eliminated and the complete formulation is written in terms of velocity. This avoids the difficulty of convective discretizations and provides considerable reductions in storage and computational requirements while improving accuracy. In this paper, we give the influence of different parameters (Marangoni number, Reynolds number) on thermocapillary convection in cavity with two-layer immiscible fluids. As shown by the numerical results, when the physical parameters between liquid encapsulant and melt are chosen appropriately, the detrimental flow in the bottom melt layer can be greatly suppressed. The influence of the free interface on thermocapillary convection is also shown. Science Press, 1992 boundary element nationallicence computation of convective terms nationallicence thermocapillary convection nationallicence two-layer immiscible fluids in cavity nationallicence flat and free interfaces nationallicence Journal of Thermal Science Science Press 1/4(1992-12-01), 259-266 1003-2169 1:4<259 1992 1 11630 https://doi.org/10.1007/BF02653205 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02653205 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Lu Wen-Qiang Department of Physics, Graduate School, Academia Sinica, P.O. Box 3908, 100039, Beijing, China aut NATIONALLICENCE 773 0- Journal of Thermal Science Science Press 1/4(1992-12-01), 259-266 1003-2169 1:4<259 1992 1 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer