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On the other hand wind flow around the bridge site as well as the environment around the mountain wind flow, wind speed field and the distribution of turbulent flow, etc is obtained by using CFD technology.
At the same time the finite element model is set up to simulate wind environment of real bridge by using CFD technology[2,3], a finite element model of numerical simulation of wind environment of a real bridge and supply the wind effective supplement for environmental monitoring data.
The numerical simulation using Fluent 6.2 software, this numerical simulation considered two cases: there is a real bridge and there is no real bridge.
(2) Wind field of terrain liking bell where the river flows from canyon to the open field have been simulated by CFD.
The results from the numerical simulation results compared with the wind observations showed that numerical simulation of wind field characteristics is consistent with measured properties of wind field.

In this paper, the temperature field of freeboard is simulated with computational fluid dynamics(CFD).
For this simulation, the Realizable turbulance model is used
Selection of simulation parameters.
The three coefficients equation is used in this simulation
The simulation results under different operation conditions are shown in Fig. 2.

Computational fluid dynamics (CFD) is presented as an important tool in solving problems involving the dispersion of chemicals into the atmosphere.
This study was conducted by means of numerical simulations using the commercial package ANSYS CFX®.
Geometry and mesh For the generation of the structured mesh, or computational domain, representing the physical domain of study, the ICEM-CFD software was used.
Figure 3: Mesh used in the simulations, highlighting the input area and the chimney.
The structured mesh was made using the ICEM CFD software, which consists of 228,000 control volumes.

CFD packages used in this study, with powerful computing features, it's built-in the dynamic fluid dynamics equations, have to know how to self do rational, logical judgments engineering objects.
Experimental equipment In order to identify the most appropriate air flow field inside the dust collector pressure situation, the research laboratory equipment commercial computational fluid dynamics CFD (computational fluid dynamic CFD) commercial software package, selected under different conditions,conducted simulation experiments,and want to pursue the purpose of this study, the dust collector internal air flow field flow pressure in what circumstances?
The present simulation experiment using the same air inlet a suction wind speed of 3.0m / s, and to cause the entire virtual dust collecting apparatus (Figure 1), its internal air flow simulation, in the Z axis direction was provided with a downward gravity acceleration of -9.8 (m / s ²).
The simulation of air were the type of gas should be regarded as a non-Newtonian fluid not sticky (Inviscid) .
Numerical Simulation In recent decades, CFD has been greatly developed, all phenomena involving fluid flow, heat exchange and molecular transport problems, almost all through computational fluid dynamics methods to the analysis and simulation [6].

Email: railway_dragon@163.com Keywords: Cavitation, CFD, Bio-inspired, Multiscale molecular modeling, Optimization, Rubber-like materials.
The computational fluid dynamics (CFD) code, ANSYS Fluent 17.0 was used to test the 3D model with assigned boundary conditions to determine the vapor fraction and the static pressure.
Simulation Methodology Molecular modeling.
Although stable at t = 0.5 ns, further simulation did change the nanodroplet’s shape.
Molecular Dynamics Simulation of Polymer–Metal Bonds.

The For numerical simulation, commercially available computational fluid dynamic (CFD) softwares GAMBIT and FLUENT are used.
Computational fluid dynamics (CFD), as a promising technique in wind engineering research, has attracted growing interest in the past two decades.
Compared with the conventional experimental approaches, CFD could provide more details about flow field without any need for employing complicated control and measurement systems.
Rolland et al. [6] developed a CFD based computational model to analyse the aerodynamic performance of their novel designed vertical axis wind turbine (VAWT).
For numerical investigation, CFD software GAMBIT is used for meshing the geometry and specifying the boundary conditions, whereas ANSYS FLUENT 14.5 software is used to solve the Navier-Stokes equations.

In this paper, CFD software is introduced to simulate the process of the flow of the spiral tube exchanger.
Simplified structure of the spiral tube Mathematical model The numerical simulation has been performed using CFD software and SIMPLE algorithm is adopted [9].
The standard turbulence model with standard wall functions is applied during the simulation.
Also, gravity effect is considered in the simulation[14].
Summary Through the application of the CFD software in this paper, analysis of the internal flow of the spiral tube exchanger is available.

Slobody 17, 812 31 Bratislava, Slovakia amichal.varchola@stuba.sk, bpeter.hlbocan@stuba.sk Keywords: mixed flow pump, CFD simulation, axial diffuser, best efficiency point Abstract.
THE INFLUENCE OF THE MENTIONED PARAMETERS IS DETERMINED BY THEIR VARIATION AND AFTERWARDS WE WERE FOCUSED ON THE VALUES OF HYDRAULIC EFFICIENCY AND TRANSPORT HEIGHT OBTAINED BY CFD SIMULATION.
CFD SIMULATION OF THE FLOW IN THE PUMP CFD simulation was performed in the calculated area, which included the straight section of the suction pipe, impeller, diffuser and a section of the discharge pipe (Fig. 5).
Impeller considered in the CFD simulation was without front shroud (open impeller).
The simulation uses implemented SST turbulence model and automatic wall function.

CFD Investigation into Internal Flows of PEM Fuel Cell for Optimal Performances Zhijun Penga and Pattarapong Choopanyab School of Engineering and Informatics, University of Sussex, United Kingdom az.peng@sussex.ac.uk, bp.choopanya@sussex.ac.uk Keywords: PEM fuel cell, CFD simulation, internal flow field.
The simulation results show that a parallel flow-field design with appropriate humidity level can compete with the serpentine counterpart and gives considerably lower pressure drop across the cell.
The 3-dimensional, multi-phase models of scaled-down straight parallel and serpentine types PEMFC are developed based on a commercial CFD code to study and compare their steady-state performance.
The simulation results show that a parallel flow-field design with appropriate humidity level can compete with the serpentine counterpart and gives considerably lower pressure drop across the cell.
[6] Dawes JE, et al., Three-dimensional CFD modelling of PEM fuel cells: An investigation into the effects of water flooding, Chemical Engineering Science 64 (2009), 2781-2794

CFD Simulation Simulations (CFD) allow the solution of the equations governing the physical behavior of a fluid.
The device will be fabricated and installed to verify the results of both the hydraulic design and CFD simulation reported in this paper.
CFD Numerical simulations of Francis turbines | Simulación numérica (CFD) de turbinas Francis.
CFD Numerical simulation of the flow in hydraulic turbo machines, state of art and source of mistake.
Application of Richardson extrapolation method to the CFD simulation of vertical-axis wind turbines and analysis of the flow field.