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RISA Model for Simulation of Turbulent Flow With High Free Stream Turbulence Implemented in OpenFOAMآ®
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A lowReynolds number kخµ model for simulation of turbulent flow with high free stream turbulence is developed which can successfully predict turbulent kinetic energy profiles, skin friction coefficient, and Stanton number ...
Numerical Simulations of the Near Field Region of Film Cooling Jets Under High Free Stream Turbulence: Application of RANS and Hybrid URANS/Large Eddy Simulation Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper investigates the flow field and thermal characteristics in the nearfield region of film cooling jets through numerical simulations using Reynoldsaveraged Navier–Stokes (RANS) and hybrid unsteady RANS (URANS)/large ...
Unsteady Numerical Simulation of Flow in Draft Tube of a Hydroturbine Operating Under Various Conditions Using a Partially Averaged Navier–Stokes Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The variable energy demand requires a great flexibility in operating a hydroturbine, which forces the machine to be operated far from its design point. One of the main components of a hydroturbine where undesirable flow ...
Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part I: Simulation of the Vortex Rope
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical simulations and analysis of the vortex rope formation in a simplified draft tube of a model Francis turbine are carried out in this paper, which is the first part of a twopaper series. The emphasis of this part ...
Flow in the Simplified Draft Tube of a Francis Turbine Operating at Partial Load—Part II: Control of the Vortex Rope
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical simulations and investigation of a method for controlling the vortex rope formation in draft tubes are carried out in this paper, which is the second part of a twopaper series. As shown in the companion paper, ...
A Comparative Study of Performance of Low Reynolds Number Turbulence Models for Various Heat Transfer Enhancement Simulations
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The goal of this study is to evaluate the computational fluid dynamic (CFD) predictions of friction factor and Nusselt number from six different low Reynolds number k–ε (LRKE) models namely Chang–Hsieh–Chen (CHC), ...