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However, the most limitation of a 2-D CFD model is no geometrical detail of tubes and chambers for the simulation ,due to a great effect of the geometry on the flow field.
Therefore, numerical simulation for the flow filed in the cylinder, suction system and discharge system is predicted unsatisfyingly via a 2-D CFD model. 2-D CFD analyses for temperature and velocity profiles, the valve dynamics and so on, were implemented by Kim , et al.[11], adopting the software package ADNIA. 3-D CFD model: based on Reynolds-averaged Navier–Stokes equations and an ideal gas equation of state, a 3-D CFD model for the analysis of the compressible turbulent flow in the cylinder, the suction chamber and discharge chamber of a reciprocating compressor is built, employing the dynamic mesh owing to the occurrence of moving boundaries, for example, the motions of valves and piston [12].
In contrast with the experiment，CFD can shorten the term and reduce the cost in the development.
In the era of the rapid update of the product and the fierce competition in the market, it’s of great significance for the enterprise to lower costs, shorten the term and be competitive in the market, employing the gas force from CFD as the boundary condition of the simulation of the dynamics of the main drive system.
[7] C.Q Song: Dynamic Analysis and Simulation of the Automotive Air Compressor’s Crank-Rod Mechanism (MS., Wuhan University of Technology, China 2009), p.14

The experimental results were compared with theory based calculations and also with 3-D computational fluid dynamics (CFD) simulation results.
The goals of this study were to use a measurement-based method for separation of thermal contact resistances [8], evaluate the pressure dependence between a SiC chip and Molybdenum and between Molybdenum and bulk Copper and validate the results with 3-D computational fluid dynamics (CFD) simulations.
Steady state thermal CFD simulations of the experiment setup were performed in the model.
Detailed CFD model simulation results.
Good agreement between thermal measurements and 3-D CFD simulations was also obtained.

In this article, CFD numerical method will be used to research four blades properties of ram air turbine.
We used the CFD numerical method to design the RAT blade, we hope this method will be used in our future products design.
In this article, CFD numerical method will be used to research four blades properties of ram air turbine.
Figure.6 RAT calculation model 3 Numerical Simulation Of Ram Air Turbine Blade The last century since the seventy’s, with the advent of large high-speed computer and the development of a series of effective approximate methods(such as the finite difference method, the finite element method and the finite volume method and so on, make CFD numerical simulate method more and more important to aerodynamics.
It can solve some problems which cannot be solved by experimental method and the method of theoretical analysis. 3.1 Calculation Mesh Of Ram Air Turbine Generated CFD numerical simulation cannot do without the computational grid, that is, the solution domain of discrete space.

Simulation of Noise.
Simulation of Dust.
Since airflow simulation is non-trivial regarding its methodology and on the other hand also very performance-intensive to compute, it made no sense to try to put a CFD solver into our simulation.
CFD (a) Scenario 1, (b) 2 and (c) example of resulting velocity field (from scenario 1).
Christian Weber provided the CFD simulation results which then got imported and rasterized in NetLogo.

Numerical simulations are ideally suited to study these complex immiscible interfacial flows and provide an insight into the process that is difficult by experiments.
The VOF (volume-of-fluid) method is widely adopted by general commercial CFD (computational fluid dynamics) codes.
ANSYS CFX ® is a general commercial CFD code that uses the VOF method to treat immiscible interfacial multiphase flows.
On the second experiment all the simulation parameters of Experiment 1 were maintained except the viscosity of the cement which value was replaced by Equation 1.
Considering the power law, total pressure continuously increases until the end of the simulation - Figure 4 (b).

Optimization Design Research on Manual Piston Pump Liu Nan12,a, Liu Jinli1,b, Fang Baohua1,c, Zhang Hongwang1,d, Shao Weiguang1,e 1 POL Research Institute of General Logistics Department of PLA, Beijing, 102300, China 2 Department of Precision Instrument and Mechanisms, TsingHua University, Beijing, 100084, China aliunanchina@tom.com, bjinlizys@163.com, cfbh@163.com,dylszhw@sohu.com, eshaowg@sina.com Key words: manual piston pump, optimization design, FEM, CFD Abstract: As the research object a manual piston pump is designed lightweight, by using optimization theory and FEM&CFD software.
The CFD zone and mesh is shown in figure3.
The simulation analysis results are as shown in figure 4-8 Fig3 CFD zone and mesh Fig4 Zero time pressure contours Fig5 1/4 time pressure contours Fig6 1/2 time pressure contour Fig7 3/4 time pressure contour Fig8 1 time pressure contour Piston structure design.
Conclusion By the combination of FEM and CFD-based design analysis and optimization design theory, the manual piston pump, pump, piston and end cap structure and the optimization of the flow field design, to make the product more reasonable flow field design, structural strength and stiffness to meet the design requirements.
The FEM and CFD software to improve speed and reliability of the design of product design and shorten the product development cycle, reduce product development costs.

Combining with CFD wind field simulation of different architectural layouts, this paper studies the adaptive layout of residential architecture on surrounding environment.
Therefore, based on the Gaussian model, at the same time, combining with the CFD wind field simulation, this study provides a reference for the architectural layout planning in residential quarter.
Through the CFD simulation, it is known that when determinantal layout buildings are perpendicular to wind direction, buildings in upstream of airflow may prohibit the wind field of buildings in downstream, which furthest help the building to adapt to the requirements of wind-resistant in winter in residential area.
The pollutant concentration distribution of three kinds of layouts including determinantal layout, oblique column type and alternate layout can be known through CFD simulation.
Research on visualization of point-pollution source diffuseness simulation [J].

., Shanghai, China ayanglianqiao@shu.edu.cn, bjhzhang@staff.shu.edu.cn, choogez@gmail.com Keywords: Numerical simulation, MOCVD, CFD, GaN-based LED Abstract.
CFD was used for the mathematical solution of the fluid flow, temperature and concentration fields.
The numerical simulation results show all the fields distributions were in an acceptable range.
Further more, experienced numerical simulation can also be used during the optimization of process [5, 6, 7].
For the mathematical solution of the fluid flow, temperature and concentration fields, the commercialized computational fluid dynamics (CFD) based solver-Ansys-FLUENT was utilized.

Success rate of the first sample’s trial-manufacture is greatly improved by using CFD simulation experiment in the process of design.
Development cycle was shortened and the cost was reduced by using CFD simulation experiment, which could provide a further reference for two-stage superheated steam trap design.
Numerical Simulation Calculation and Analysis of Results.
Because of CFD simulation experiment was utilized in the design, flow resistance coefficient of two-stage superheated trap could be calculated accurately.
CFD Modeling of Globe Valves for Oxygen Application. 16th Australasian Fluid Mechanics Conference Crown Plaza, Gold Coast, Australia, pp.1356-1363, December 2007

One method of Fluid-solid coupled interaction simulation Y.W Lin 1,a , *X.C You 1,b, Z.
In the fluid domain, use the CFD to compute the unsteady Navier-Stockes equation; in the solid domain, use CSD to compute the unsteady flutter equation.
Nowadays, Abaqus and Fluent are two distinguished CSD and CFD software.
In this problem, it presents a coupling simulation between Abaqus/standard and Fluent.
[9] XU Min, AN Xiaomin, CHEN Shilu, CFD/ CSD Coupling Numerical Computational Methodology, Acta Aeronautica et Astronautica Sinica. 27(1), 2006:33-37.