"2"^^ . "Bodn\u00E1r, Tom\u00E1\u0161" . . "VOF; finite volume; free surface; turbulent"@en . "2008-10-22+02:00"^^ . "3"^^ . "The aim of this paper is to present the comparison of results of numerical simulations with experimental data for the case of turbulent free surface flow in an open channel with ribbed bottom. Mathematical model used for numerical simulations is based on simple version of Volume of Fluid (VOF) method. The model consists of system of Reynolds-Averaged Navier-Stokes equations for incompressible, variable-density fluid flow. The water-air flow is then treated as a flow of single fluid with variable material properties (i.e. density and viscosity). The VOF method used to resolve the water-air interface allows for very straightforward implementation of turbulence model. In this case the Helsten's modification of SST k-omega model was used." . "Validace numerick\u00E9ho modelu pro simulaci turbulentn\u00EDho proud\u011Bn\u00ED s volnou hladinou"@cs . "Colloquium Fluid Dynamics 2008" . "Validace numerick\u00E9ho modelu pro simulaci turbulentn\u00EDho proud\u011Bn\u00ED s volnou hladinou"@cs . . . "Prague" . . "978-80-87012-14-7" . . . . . . . . "P\u0159\u00EDhoda, Jarom\u00EDr" . "Kozel, Karel" . "The aim of this paper is to present the comparison of results of numerical simulations with experimental data for the case of turbulent free surface flow in an open channel with ribbed bottom. Mathematical model used for numerical simulations is based on simple version of Volume of Fluid (VOF) method. The model consists of system of Reynolds-Averaged Navier-Stokes equations for incompressible, variable-density fluid flow. The water-air flow is then treated as a flow of single fluid with variable material properties (i.e. density and viscosity). The VOF method used to resolve the water-air interface allows for very straightforward implementation of turbulence model. In this case the Helsten's modification of SST k-omega model was used."@en . "384807" . "Praha" . . . "21220" . . "11"^^ . . "On the Validation of Numerical Model for Simulation of Turbulent Free - Surface Flows"@en . . "On the Validation of Numerical Model for Simulation of Turbulent Free - Surface Flows" . "On the Validation of Numerical Model for Simulation of Turbulent Free - Surface Flows" . "RIV/68407700:21220/08:02147192!RIV09-MSM-21220___" . "Tento \u010Dl\u00E1nek prezentuje srovn\u00E1n\u00ED numerick\u00FDch a experiment\u00E1ln\u00EDch v\u00FDsledk\u016F pro p\u0159\u00EDpad turbulentn\u00EDho proud\u011Bn\u00ED s volnou hladinou v otev\u0159en\u00E9m kan\u00E1le se \u017Eebrovan\u00FDm dnem. Matematick\u00FD model je zalo\u017Een na jednoduch\u00E9 variant\u011B metody VOF. Model se skl\u00E1d\u00E1 z Reynoldsovsky st\u0159edovan\u00FDch Navierov\u00FDch-Stokesov\u00FDch rovnic pro nestla\u010Ditelnou tekutinu s prom\u011Bnnou hustotou. Proud\u011Bn\u00ED vody a vzduchu je v tomto p\u0159\u00EDpad\u011B ch\u00E1p\u00E1no jako proud\u011Bn\u00ED jedin\u00E9 tekutiny s prom\u011Bnn\u00FDmi materi\u00E1lov\u00FDmi parametry (tj. hustotou a viskozitou). Metoda VOF umo\u017E\u0148uje velmi p\u0159\u00EDmo\u010Darou implementaci modelu turbulence. V tomto p\u0159\u00EDpad\u011B byl pou\u017Eit SST k-omega model v Helstenov\u011B modifikaci."@cs . . "[6C62B4DFC67D]" . . "On the Validation of Numerical Model for Simulation of Turbulent Free - Surface Flows"@en . . "\u00DAstav termomechaniky AV \u010CR" . . "P(GA103/06/0461), Z(AV0Z20760514), Z(MSM6840770010)" . "RIV/68407700:21220/08:02147192" . .