Turbulent flows
Numerical experiments for turbulent flows
... transonic flows in the internal and external ...Viscous turbulent flows have been simulated using either zero equation algebraic Baldwin-Lomax model and two equation k − ω model in its basic version ...
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Image analysis techniques for the study of turbulent flows
... instance, turbulent flows play a huge role in the motion of air around and behind cars, airplanes, boats, and other moving objects, because of drag and wake; in the reduction of the concentration of ...
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Multiscale Modeling and Computation of 3D Incompressible Turbulent Flows
... incompressible flows at high Reynolds number is very challenging due to the huge number of degrees of ...of turbulent flows is essential in many engineer- ing ...obtain turbulent models using ...
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Development of a Regional Structured and Unstructured Grid Methodology for Chemically Reactive Turbulent Flows.
... A cell-centered finite volume method for solving the RANS equations for flows containing an arbitrary number of frozen or chemically reacting species on unstructured meshes has been presented. The RANS solver uses ...
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Numerical Simulation and Subgrid Scale Modeling of Mixing and Wall Bounded Turbulent Flows
... turbulent flows. To date, an LES practitioner wishing to simulate a turbulent flow effectively assumes that the dynamics of large-scale, resolved eddies are dominated by the flow geometry along with ...
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A Study of The Turbulent Flows in Sloping and Adversely Sloping Rectangular Culvert
... the turbulent flows and flow characteristics through sloping and adve rsely sloping rectangular culvert in rectangular channel of constant width using Laser Doppler Velocimetry ...
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Qualitative Aspects Of Non-Equilibrium Statistical Distributions For Turbulent Flows
... The Scale Distribution handles the variation of the scale of the eddies with respect to time, but, an essential feature of the eddies is their vorticity. Mainly, the direction of their spin and their angular velocities ...
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Large Eddy Simulation and Analysis of Turbulent Flows in a Motored Spark Ignition Engine
... ANSYS Forte automatically generates and updates the volume mesh with perfectly orthogonal Cartesian cells on-the-fly, during the simulation. Solution-adaptive meshing (SAM) [28] is used throughout the simulation. SAM ...
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Wall y Strategy for Dealing with Wall-bounded Turbulent Flows
... Turbulent flows are significantly affected by the presence of walls, where the viscosity-affected regions have large gradients in the solution variables and accurate presentation of the near- wall region ...
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Numerical Methods for Solving Turbulent Flows by Using Parallel Technologies
... er–Stokes equations (or RANS equations) are time-averaged equations of motion for fluid flow. The idea behind the equations is Reynolds decomposition, whereby an instantaneous quantity is decomposed into its ...
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The control of turbulent flows around bluff bodies by means of spanwise sinusoidal profiles
... Turbulent flows around three-dimensional obstacles occur frequently and they occur around communication towers, buildings, cylindrical support structures, bridges, vehicles and so ...of turbulent ...
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A Study of Numerical Modeling of Heat Transfer in Wall-Adjacent Turbulent Flows
... all-function strategies are certainly the approach of preferred by CFD code and their clients. However, the accuracy returned by many schemes when applied to new types of problems can be quite poor. Fig.(1) shows the ...
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A numerical study into the effects of turbulent flows around full-scale buildings
... Coordinate transformation factor r Diffusivity coefficient 6 Boundary-layer thickness 61j Kronecker delta C Dissipation of turbulent kinetic energy Dissipation rate of UfiiJ Von Karman c[r] ...
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Vertical variation of mixing within porous sediment beds below turbulent flows
... erosimeter. This assumes that the source of the mixing is from turbulence generated at the sediment-water interface and that the turbulent fluctuations dissipate with distance below the interface. These processes ...
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Pressure signature in adverse-pressure-gradient wall bounded turbulent flows
... In adverse pressure gradient flows, static pressure increases in the flow direction,.. in comparison with zero and favorable pressure gradient flows, where 5P/dx = 0 and.[r] ...
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A New Model for Prediction of Heat Eddy Diffusivity in Pipe Expansion Turbulent Flows
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Numerical investigation of highly curved turbulent flows in centrifugal compressors and in a simplified geometry
... From a numerical perspective, many researchers have looked at the sensitivity of different turbulence models with respect to curvature effects, again with a focus on curved ducts. Due to the wide range of experimental ...
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Local existence of strong solutions to the k-ε model equations for turbulent flows
... Equations (.)-(.) are derived from combining the effect of turbulence on the time- averaged Navier-Stokes equations with the k-ε model equations. The unknown functions ρ, u, h, k, and ε denote the density, velocity, ...
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Accelerating the Simulation of Chemically Reacting Turbulent Flows via Machine Learning Techniques.
... 22 work, they will be applied to regression problems. Furthermore, there are other machine learning algorithms which can be used for regression; however, artificial neural networks have been used in this work. There are ...
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Vertical variation of mixing within porous sediment beds below turbulent flows
... erosimeter. This assumes that the source of the mixing is from turbulence generated at the sediment-water interface and that the turbulent fluctuations dissipate with distance below the interface. These processes ...
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