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On the Numerical Behavior of RANS-Based Transition Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A comparison of several Reynolds-averaged Navier–Stokes (RANS) based transition models is presented. Four of the most widespread models are selected: the γ−Reθ, γ, amplification factor transport (AFT), and kT−kL−ω models, ...
Transition and Turbulence Modeling for the Prediction of Cavitating Tip Vortices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study evaluates the influence of transition and turbulence modeling on the prediction of wetted and cavitating tip vortices for an elliptical wing, while investigating the numerical errors. Transition modeling increases ...
Investigating the Effect of the Closure in Partially-Averaged Navier–Stokes Equations
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The importance of the turbulence closure to the modeling accuracy of the partially-averaged Navier–Stokes equations (PANS) is investigated in prediction of the flow around a circular cylinder at Reynolds number of 3900. A ...
Influence of Interpolation Scheme on the Accuracy of Overset Method for Computing Rudder-Propeller Interaction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The overset method and associated interpolation schemes are usually thoroughly verified only on synthetic or academic test cases for which conclusions might not directly translate to real engineering problems. In the present ...
Force Measurements of the Flow Around Arrays of Three and Four Columns With Different Geometry Sections, Spacing Ratios, and Incidence Angles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental campaign for the flow around a stationary array of three and four columns with low aspect ratio, H/L = 1.5, piercing the water free surface, was carried out in a towing tank. These numbers of columns ...
The Development of a Partially Averaged Navier–Stokes KSKL Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new partially averaged Navier–Stokes (PANS) closure is derived based on the k−kL (KSKL) model. The aim of this new model is to incorporate the desirable features of the KSKL model, compared to the k−ω shear stress transport ...
Code Verification of Non-Newtonian Fluid Solvers for Single- and Two-Phase Laminar Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The presence of complex fluids in nature and industrial applications combined with the rapid growth of computer power over the past decades has led to an increasing number of numerical studies of non-Newtonian flows. In ...