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A more detailed study was conducted using a CFD model for unsteady flow, known as the Research Institute for Applied Mechanics, Kyushu University, COMputational Prediction of Airflow over Complex Terrain (RIAM-COMPACT) which is based on the Large-Eddy Simulation (LES) technique.
Annual energy generation (kWh), utilized capacity (%) and wind roses can be calculated from the 16 wind directions dependent simulation results entered into the systems.
Although 10 WTGs are set for simulation purposes, we will only focus on the further discussion for WTG 5 and WTG 7.
Micro-siting Technique for Wind Turbine Generators by Using Large-Eddy Simulation.
Ohya; Latest Developments in Numerical Wind Synopsis Prediction Using the RIAM-COMPACT® CFD Model—Design Wind Speed Evaluation and Wind Risk (Terrain-Induced Turbulence) Diagnostics in Japan.

Effect of Peclet Number on the Thermo Capillary Convection and Molten Pool Shape Formation during Laser Welding Using CFD T.
Keywords: Laser beam welding, CFD, Peclet Number, Marangoni convection, AISI-304, Finite control volume method.
A mathematical model is developed for the simulation of keyhole and molten pool formation during laser beam welding.
Numerical modeling and simulation A three dimensional model is developed.
Numerical simulation A non uniform well structured grid system is used for the simulation in which smaller grids are arranged near the weld area and larger grids for the remaining part.

Meshing Process In CFD simulations applied to 3D concrete printing the mesh elements that fill the volume of the model, representing a discrete space that defines the local flow, so, a high-quality mesh is critical for obtaining reliable solutions and ensuring numerical stability.
A critical stage in 3D printing CFD simulation is the evaluation of the accuracy, sensitivity and robustness of the generated mesh grids.
Boundary Conditions In CFD simulations applied to 3D concrete printing, all CFD problems are defined by initial and boundary conditions, which must be specified correctly.
As example, for Large Eddy Simulation (LES) and Detached Eddy Simulation (DES) the symmetric boundary condition cannot be used due to the inherent nature of the eddies. 6.
Sankaran, Mesh quality effects on the accuracy of CFD solutions on unstructured meshes, J.

In the near wall region and airflow separation simulations, the simulation results of SSTmodel are more close to the actual condition compared with standard and RNG models.
Introduction Common methods used to study vehicle aerodynamics are DNS (Direct Numerical Simulation), LES(Large Eddy Simulation) and RANS(Reynolds-Averaged Navier-Stokes) model.
It can be judged the front of vehicle simulation of Standardmodel is distortion.
Conclusions In this study, the CFD analysis of vehicle external flow using the Standard, RNG models and SSTmodel by FLUENT is conducted.
References [1] Fujun Wang：The Analysis of CFD (In Chinese)( Tsinghua University Press, Beijing, China 2005) [2] ANSYS Inc: ANSYS FLUENT 12.0 Theory Guide (ANSYS Inc, USA 2009) [3] F.R.

Through the simulation and calculation of the flow field of oxidation ditch that pushed by the blade, based on the fluid-structure interaction analysis, the reliability of the impeller blades has been studied.
Fig.3 Velocity vectors of the flow field Fluid-Structure Interaction Analysis 3D-Model Meshing for CFD Meshing for FEA CFD Calculation Calculation Result of CFD Static Analysis of FEA Calculation Result of FSI Fig. 4 The new curved impeller coupling analysis flowchart In this paper, the one-way fluid-structure interaction method was chose to analyze the fluid situation on the impact of the new curved blade, the flowchart is shown in Fig. 4.
Conclusions In summary, based on the model of inverted umbrella aerator surface impeller of a unidirectional fluid-structure interaction simulation, the analysis and calculation results can be obtained to meet the design requirements, which have a certain guiding significance for optimization design and operation of the new curved inverted umbrella aerator impeller.

By using CFD technology, the velocity distribution of flow at the blade position was analyzed and the different effects caused by blade numbers to the particle removal efficiency were discussed.
Fig.1 Computational grid and boundary conditions An Eulerian- Eulerian two-phase flow model of the first-stage grit chamber with rotational flow is applied to conduct the numerical simulation, then the simulation results of the water and particles could be presented
The aforementioned simulation demonstrated that the optimal solution of blade number is 4 and the grit chamber runs best.
The velocity distribution of flow at the blade position and the effects caused by different blade numbers (2, 3, 4, and 6) to the removal efficiency were discussed by using CFD technology.
Li: Hyperconcentrated Solid-Liquid Two-Phase Flow Simulation on Vortex Grit Chamber in Sandstone Wastewater Treatment.

In the paper, the combustion process of HFPE is simulated by using the commercial CFD software AVL FIRE.
CFD Modeling Model Configuration.
Conclusions The combustion process of two-stroke loop-scavenging HFPE is simulated based on the commercial CFD software AVL FIRE.
Blair, Design and Simulation of Two-stroke Engines.
(in Chinese) [6] J.Fredriksson, I.Denbratt, “Simulation of a Two-Stroke Free Piston Engine”, SAE paper, 2004-01-1871

The CFD analysis has been carried out in CFX software, which is available in ANSYS Workbench 14.In order to apply the spray of diesel fuel and air phases to the program, diesel fuel and air properties from the fuel library were used.
The nozzle geometry used in simulations is shown in Figure 1.
Isothermal conditions are assumed and the temperature used for the simulations was 25 oC.
Results and Discussion The CFD analyses for the three different air inlet conditions are discussed in this section in order to investigate the effects of utilizing different air pressures on mixing characteristics of diesel and air phases.
[10] Fridolin K., CFD for air induction systems with OpenFOAM, Msc.

Large Eddy Simulation of the Gas–Liquid Flow in a Cylindrical Cross-Sectioned Bubble Column W.L.
Numerical Results The simulation example is shown schematically in Figure 1.
Large eddy simulation of con>ned swirling flow.
Computational fluid dynamics (CFD) analysis of multiphase chemical reactors.
Dynamic simulation of dispersed gas–liquid two-phase flow using a discrete bubble model.

With the development of turbulence models, the unsteady Reynolds-averaged Navier–Stokes (URANS) model, detached eddy simulation (DES) and large eddy simulation (LES) compensate the disadvantage of RANS model.
Introduction Recently, the numerical simulation technique has been widely used to study the bluff body aerodynamic phenomena.
Fig.6 plots the time averaged streamwise velocity component mean values for current simulation cases and other experimental and CFD results at the centreline of the computational domain respectively.
It can be found that current simulation results agree with the CFD simulation results from Murakami [10] based on the Reynolds stress model (RSM) and LES model very well, however there is a large discrepancy in the wake region between the numerical simulations by Murakami [10] based on the standard model.
It is found that LES is a mesh sensitive simulation model and fine mesh density will consider more eddies with high frequency part.