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Showing 1 to 8 of 8 for “"Reynolds stress model"”.
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Reynolds stress model for hypersonic flows
… the investigation of these flows at real flight Reynolds number, the Reynolds Averaged Navier-Stokes equation (RANS) approach to turbulence is the only affordable tool at the moment. However, well-assessed turbulence models that are known to perform properly at lower speed, cannot be used in …
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Turbulence models for non-circular ducts and channels
… geometries. Two different turbulence models were evaluated: a complete Reynoldsstress- transport model and a two-equation k-f model used in conjunction with a nonlinear stress-strain relationship. Detailed consideration was given to the various approximations utilized in closing the …
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The evaluation of turbulence models using tensor visualization techniques
… tensor, the tensor glyph, is used to present the Reynolds stresses found in turbulent flow. Various glyph types discussed in the literature are analyzed, and a glyph suitable for the Reynolds stress tensor is developed. This glyph is constructed so that the degree of anisotropy and the orientation …
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A numerical study into the effects of turbulent flows around full-scale buildings
… full-scale buildings. Two different turbulence models were considered: a complete Reynolds stress model with two alternative proposals for the pressure-strain correlations and a k-E model used in conjunction with both linear and nonlinear stress-strain relationships. The governing differential …
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Numerical investigations of relaminarization in scramjet flows
… of relaminarization using statistical turbulence models are presented. The goal is to identify suitable models that can be used in the design and development process of a 3D scramjet inlet by means of numerical methods. The computations were performed using a well-validated in-house finite volume …
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Using the movability number to model local clear-water scour in rivers
… local scour is estimated using physical models, empirical formulae or numerical models. Of these methods, the use of numerical models appears to be more economical and ideal as it permits flexibility in the choice of flow parameters and allows different scenarios to be easily studied. The …
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Modelling of turbulent swirling flows
… swirling flows using popular turbulence models with a robust numrical procedure. The performance of these turbulence models is assessed and compared against experimental data for anisotropic, turbulent swirling flow in a cylindrical pipe and non-reacting and reacting combustion chambers. …
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The Evaluation of Time-Dependent Flow in Swirl Burners
… Computational Fluid Dynamics modelling package, FLUENT was used to produce two and three-dimensional computational models to predict the flowfield structures of the burners in isothermal and combustion cases. Four turbulence models were evaluated in the prediction: the k-e …