high Reynolds number
Evaluation of Advanced Turbulence Models for High Reynolds Number External Flow
... physics. High-Reynolds number external flows typically exhibit complex separation and reattachment phenomena in regions of adverse pressure ...ited Reynolds-Averaged Navier-Stokes (RANS) ...
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Scalable Block Preconditioners in Computational Fluid Dynamics at High Reynolds Number
... of high Reynolds number, is still a challenging numerical linear algebra ...the number of the eigenvalues of the preconditioned ( 1, 1 ) block which are far away from 1 (outliers) is small and ...
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Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows
... speed rise by using the results from the first step. The turbine model takes into account friction losses in the shaft bearings and ventilation losses in the turbine housing [6]. From comparisons of head changes at the ...
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Contaminant removal for different geometry of cavities with high Reynolds number using fluent
... very high Reynolds numbers and some of them were not ...extremely high Reynolds ...the high Reynolds number toward the contaminant removal, the high Reynolds ...
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A comparative study of boundary conditions for lattice Boltzmann simulations of high Reynolds number flows
... Four commonly-used boundary conditions in lattice Boltzmann simulation, i.e. the bounce-back, non- equilibrium bounce-back, non-equilibrium extrapolation, and the kinetic boundary condition, have been systematically ...
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Study on pressure drop characteristics of single phase turbulent flow in pipe bend for high Reynolds number
... Turbulent flow of single phase incompressible fluid through 90° pipe bend has been simulated numerically using k-ε RNG turbulence model in the present study. The validation of 3D models used for present study with ...
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Numerical Computation of Flow Reattachment Lengthovera Backward Facing Step at High Reynolds Number
... the Reynolds number ...in high Reynolds ...different Reynolds number on recirculation flow ...and Reynolds number, the recirculation flow length ...under ...
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Instabilities in a high-Reynolds-number boundary layer on a film-coated surface
... The linear stability analysis reported in this paper is a part of research directed eventually at weakly and strongly nonlinear theoretical modelling of transitional boundary layers on wave-supporting liquid coatings. ...
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NUMERICAL SIMULATIONS ON FLOW AROUND AN INCLINED CIRCULAR CYLINDER AT HIGH REYNOLDS NUMBER
... respectively in Figs. 5.11 (a) and (b) to normalize the cylinder surface pressure. The position angle θ is defined as the angle measured from the stagnation point. Earlier discussions show that higher intensity axial ...
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Vortex Method for computing high Reynolds number flows: Increased accuracy with a fully mesh less formulation
... Vortex methods have long proved to be an effective tool for the approximation of solutions to the Euler equations, and have been used for decades in the simulation of both unbounded and bounded flows. In most ...
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High Reynolds number flow over cylinders: A Review
... Ismail celik et al. [6] used K-ε model for numerical prediction of long time average flow over circular cylinder at high Reynolds number (10 4 – 10 7 ). In subcritical region, the transitional model ...
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Unsteady effects of strong shock-wave/boundary-layer interaction at high Reynolds number
... the high Reynolds number of the flow (Loginov et ...lower Reynolds number and same Mach number (Adams 2000; Pasquariello et ...
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High Reynolds number vortex flows: Vortex/Rayleigh wave interaction and the compressible leading-edge vortex
... T he work undertaken in this thesis falls into two parts. The term ‘vortex’ is applicable to each, although rather in a different context. In P art I we discuss the stability of a lam inar boundary layer to inviscid ...
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Shock-vortex shear-layer interaction in the transonic flow around a supercritical airfoil at high Reynolds number in buffet conditions
... In this context, improved URANS approaches can be used to reduce the turbulent viscosity levels and allow the amplification of instabilities, as for example the Scale Adaptive Simulation (SAS; Menter and Kuntz, 2003; ...
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Travelling Waves: Interplay of Low to High Reynolds Number and Tan Cot Function Method to Solve Burger’s Equations
... and number of wave is easily countable as long as d is very small, see 7 (left) and simultaneously the wave number and length are increasing for larger values of d ...
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Optimal control of Gӧrtler vortices in a high-Reynolds number asymptotics framework
... Few results Numerical methods State equations: G q, ψ = 0 - nonlinear parabolic set of PDE -marching in the streamwise direction -pseudo-time relaxation in the y- and z-directions finite[r] ...
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Low-Reynolds-number fountain behaviour
... low Reynolds number an intermittent sinuous instability is observed, appearing as a wave travelling up the fluid ...the high-Reynolds-number part of this range, the sinuous instability ...
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Numerical Investigation of Vertical-Axis Wind Turbines at Low Reynolds Number
... a high Reynolds number, they suffer from inaccuracies for separated flow and unknown modeling errors for turbulence (Alfonsi, ...a high Reynolds ...low Reynolds numbers, Re ∼ ...
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Effect of Reynolds Number on Aerodynamic Characteristics of an Airfoil with Flap
... relatively new to the aerodynamic community, DBD plasma actuators have long been used in a variety of industrial applications such as ozone generation (Kogelschatz 2003). The use of DBD plasma actuators for airfoil ...
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Transition of transient channel flow after a change in Reynolds number
... ‘medium’ Reynolds number ratio) follows a similar trend (figure 1b), but the strength of the streaks is much weaker and the generation of turbulent spots seems to occur at a lower rate and the changes are ...
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