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Showing 1 to 5 of 5 for “"Turbulence--Mathematical models"”.
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Modeling of laminar-to-turbulent transition using a hybrid multi-scale simulation strategy
… in practical applications. Robust computational models are needed to predict the onset of transition and the associated flow dynamics. Direct numerical simulation (DNS), although suitable for fundamental studies, tends to be computationally expensive, thus making large-eddy simulations (LES) a …
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Turbulent mixing of unpremixed reactants in stirred tanks.
The turbulent mixing process between two liquid streams in a standard tank stirred by a Rushton turbine has been studied. Experimental measurements of concentration and segregation (fluctuating concentration) have been made for both reacting and non-reacting flows. For the non-reacting case, one …
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Least squares spectral element method for laminar and turbulent flows, –continuous and discontinuous approaches–
… (RANS), a modified Spalart-Allmaras (SA) turbulence model is employed and integrated with the mean flow equations in a segregated fashion. Two different approaches are presented for solving the SA model using the least squares method. The first method represents a simple rearrangement of …
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A numerical investigation of compressible flow in a curved S-duct
… Menter SAS and two-equation k − ε/k − ω turbulence models to determine which models best capture the relevant flow features. None of the tested turbulence models produces a solution which is clearly a better fit to the experimental data in comparison to the other turbulence models.
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Two cylindrical vortex sheets : evolution and singularity formation
Using Rosenhead's point-vortex approximation with correction terms, the evolution of two symmetrical, counter-rotating, initially cylindrical vortex sheets in an incompressible, potential fluid flow is studied. Simulations are performed in time up to the occurrence of branch-point curvature …