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RISComputational Analysis of Marine-Propeller Performance Using Transition-Sensitive Turbulence Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Almost all computational fluid dynamics (CFD) simulations of flow around marine propellers use turbulence models that are only well suited for fully turbulent flows, which in some cases may ...
A Three-Equation Eddy-Viscosity Model for Reynolds-Averaged Navier–Stokes Simulations of Transitional Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An eddy-viscosity turbulence model employing three additional transport equations is presented and applied to a number of transitional flow test cases. The model is based on the k-ω framework ...
A Recommended Correction to the kT−kL−ω Transition-Sensitive Eddy-Viscosity Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A physics-based modification to the kT−kL−ω transition-sensitive eddy-viscosity model is presented. The modification corrects an anomaly related to the physical mechanism of production of laminar kinetic energy for regions ...
A Three-Equation Variant of the SST k-ω Model Sensitized to Rotation and Curvature Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new variant of the SST k-ω model sensitized to system rotation and streamline curvature is presented. The new model is based on a direct simplification of the Reynolds stress model under ...
A New Model for Boundary Layer Transition Using a Single-Point RANS Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the development and implementation of a new model for bypass and natural transition prediction using Reynolds-averaged Navier-Stokes computational fluid dynamics (CFD), based ...
Computational Fluid Dynamics Study of Wake-Induced Transition on a Compressor-Like Flat Plate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent experimental work has documented the importance of wake passing on the behavior of transitional boundary layers on the suction surface of axial compressor blades. This paper documents ...
A Method for Three-Dimensional Navier–Stokes Simulations of Large-Scale Regions of the Human Lung Airway
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new methodology for CFD simulation of airflow in the human bronchopulmonary tree is presented. The new approach provides a means for detailed resolution of the flow features via three-dimensional ...
Computational Fluid Dynamics Simulations of Particle Deposition in Large-Scale, Multigenerational Lung Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Computational fluid dynamics (CFD) has emerged as a useful tool for the prediction of airflow and particle transport within the human lung airway. Several published studies have demonstrated the ...
Sensitization of a Transition Sensitive Linear Eddy Viscosity Model to Rotation and Curvature Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new scalar eddyviscosity turbulence model is proposed, designed to exhibit physically correct responses to flow transition, streamline curvature, and system rotation effects. The eddyviscosity model (EVM) developed herein ...
Identification of Bypass Transition Onset Markers Using Direct Numerical Simulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Efficacy of several large-scale flow parameters as transition onset markers are evaluated using direct numerical simulation (DNS) of boundary layer bypass transition. Preliminary results identify parameters (k2D/ν) and ...