"1"^^ . . . . . "Proc.Eng.Publisher" . "1071" . "Simulace probubl\u00E1van\u00E9 kolony programem FLUENT"@cs . "bubble column;simulation;two-phase flow"@en . "Bubble column simulation with FLUENT"@en . "Simulace probubl\u00E1van\u00E9 kolony programem FLUENT"@cs . "Draho\u0161, J." . "Ruzicka, M." . . . "\u0160im\u010D\u00EDk, M." . "27360" . . "1"^^ . "556616" . "P(GA104/04/0827)" . . "[3C28F3990E0C]" . "Bubble column simulation with FLUENT"@en . . "Bla\u017Eej, M." . . . "Simulace probubl\u00E1van\u00E9 kolony programem FLUENT"@cs . "Multiphase fluid dynamics presents a real challenge for the theory, the experiments and the computer simulations. The last becomes more and more important, being a natural complement of the first two. Computational Fluid Dynamics (CFD) can test theoretical predictions in virtual numerical experiments in cases where the real experiments are not feasible. On the other hand, even very complicated experimental set ups can be modeled.We use three models of the bubble columns. Columns of diameter 0.15 and 0.29m and of 0.25-2m of ungassed liquid height are studied. Superficial gas velocities are in range 0-0.15m/s. Outputs of the simulations are: averaged gas hold-up in a column, time averaged profiles of vertical speeds (both phases) and of gas hold-up in a horizontal section, and instantaneous velocity a voidage fields. These outputs are compared with experimental data. The ability of the code to capture homogenous-heterogeneous regime transition is also evaluated"@en . "RIV/61989100:27360/04:00010849" . "2004-08-22+02:00"^^ . . . "Bubble column simulation with FLUENT" . "Multiphase fluid dynamics presents a real challenge for the theory, the experiments and the computer simulations. The last becomes more and more important, being a natural complement of the first two. Computational Fluid Dynamics (CFD) can test theoretical predictions in virtual numerical experiments in cases where the real experiments are not feasible. On the other hand, even very complicated experimental set ups can be modeled.We use three models of the bubble columns. Columns of diameter 0.15 and 0.29m and of 0.25-2m of ungassed liquid height are studied. Superficial gas velocities are in range 0-0.15m/s. Outputs of the simulations are: averaged gas hold-up in a column, time averaged profiles of vertical speeds (both phases) and of gas hold-up in a horizontal section, and instantaneous velocity a voidage fields. These outputs are compared with experimental data. The ability of the code to capture homogenous-heterogeneous regime transition is also evaluated" . "5"^^ . "Bubble column simulation with FLUENT" . . "RIV/61989100:27360/04:00010849!RIV/2005/GA0/273605/N" . "80-86059-4" . . "Proceedings of 16th International Congress CHISA" . "Praha" . . "Praha" . "Wichterle, Kamil" .