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Using flow field simulation – efficient method, we can design spiral air intake with CAD from preliminary design to simulation with analysis and optimization.
FLOTRAN (CFD) Analysis The Concept of the FLOTRAN (CFD) Analysis.
Determine Analysis Region and CFD Analysis. 1) Influence of Velocity.
Fig. 2 CFD simulation analyses In helical port, velocity vector increase gradually from upper cross-section to outlet, and negative velocity component at around top wall.
References [1] C J FMcKinley N R: CFD Simulation of in-take Port F10w Using Automatic Mesh Generation: Comparison with Laser Sheet Swirl and LDA Mea-surmounts for Steady Flow Conditions, SAE Paper 980l 29

Simulation and Analysis of Formula Racing Car’s Diffuser Based on CFD Technology Ning Kang1, a, Yang Yang1,b 1School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China akangning@buaa.edu.cn, bkeithyoungrsr@hotmail.com Keywords: Aerodynamics, Lift, CFD, Diffuser Abstract.
CFD technology has been widely applied in automobile engineering, especially race car engineering.
CFD has a series of advantage such as low budget, short period, real time road simulation etc, and also can provide all flow field condition.
The surface mesh of the car is shown in Fig. 4 It is crucial to keep the wheels rotating and ground moving in the simulation, especially when studying the effect of a diffuser.
Gao: Aerodynamic Shape Design of FSC Car Body Based on CFD Technology.

On the contrary torque on the side of flow is available through CFD analysis.
CFD Analysis Of Heavy Vehicle Fan Algorithms for air circulating axial flow fans which are composed of seven blades of heavy vehicle cooling fan developed in this study are applied for CFD analysis.
Convergence of Unsteady flow simulation depends on time step size between iterations.
Fan performance is usually measured in plenum chambers, where the simulation of the unobstructed, ideal fan performance is possible.
[3]  2005, Wang, A. et al., "Evaluation of the Multiple Reference Frame(MRF) Model in a Truck Fan Simulation," SAE Technical Paper, Canada

The design of labyrinth channel, the CFD simulation method based on cylindrical channel prototype and the hydraulic performance experiment of the emitter are researched.
In this paper, the CFD simulation of the labyrinth channel was firstly carried out based on the planar model with inlet pressure of 100 kPa and outlet pressure of 0.
So it is necessary to carry on the CFD numerical simulation using the cylindrical labyrinth channel.
It showed that the velocity distribution in the labyrinth channel obtained from the experiment match and verified the CFD simulation in general.
It is proved that the CFD numerical simulation using cylindrical prototype of the labyrinth channel obtained more accurate result than that of using the planar model.

Model and Simulation on Flow and Pressure Characteristics of Axial Piston Pump for Seawater Desalination Jiang Zhaia, Hua Zhoub State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, China ajiangzhai@sina.com, bhzhou@sfp.zju.edu.cn Keywords: Axial Piston Pump, Seawater Desalination, Model and Simulation, Cavitaion.
In this paper, with cavitation being considered, LP (Lumped Parameter) model and CFD (Computational Fluid Dynamics) model for pressure and flow characteristics of an axial piston pump for seawater desalination were created, and corresponding simulation results were compared and discussed.
Simulation parameters Both the numerical solution of the LP model and the CFD model need the geometry sizes of the pump parts, and the geometry information were acquired from corresponding structure sizes of the pump.
From the main simulation results of the two models, we can make a conclusion: 1) Both the two model can describe the main flow and pressure properties of the axial piston pump for seawater desalination. 2) Although CFD model is accurate and many details such as cavitation position can be acquired, it is costly for time and hardware. 3) LP model is a simplified model compared with CFD model.
Simulation on the Dynamic Pressure and Flow of the Seawater Desalination Axial Piston Pump.

CFD Simulation of Spouted Bed Working with a Size Distribution of Sand Particles: Segregation Aspects K.G.
Computational simulation using CFD method reproduced well the segregation experiments with different participle sizes of sand.
Numerical simulation by Computational Fluid Dynamics (CFD) can be used to assist the understanding of particles dynamic of many equipments, supplying information that cannot be easily obtained experimentally.
With respect to spouted beds, there are few studies in the literature involving CFD simulations of particle mixing and segregation, and that have considered more than one solid phase [7].
Conclusions The fluid dynamics of a spouted bed operating with a size distribution of sand particles was investigated using the technique of CFD simulation considering five granular phases.

Wang [3] used CFD to solve lubrication questions.
The suitability of CFD approach was discussed.
Applied the 2D model boundary condition, we can get: (4) Figure 2 Simplified model of 2D tapered gap CFD Simulation of 2D Tapered Gap The method of numerical simulation Numerical simulation is to solve the sequence equation, the momentum equation and the energy equation by dispersing the conventional N-S equations using finite volume method.
Figure 3 Computational domain of journal bearing Simulation of direction the magnitude of force Simulate the 2D model of tapered gap using CFD, define the left and the right port as export, the number of the grid is 700000, the comparisons between numerical simulation results and theoretical analysis result of equation (4) shows exiguous difference between numerical simulation results and theoretical analysis result exists, and the maximal value of numerical simulation results is littler than theoretical result, it is because the hypotheses been defined in the process of theoretical computation result in the distortion of numerical results, CFD solves the equations directly and can simulate the 3D complicated structure, so CFD has more precision and practicability than theoretical calculation method.
The comparison between the result of bearing’s numerical simulation and reference [14] shows that the load of bearing equals 30.2N using CFD, and this result shows good match with reference.

By the simulation, the pressure, velocity and component mass fraction can be easily obtained at different time and position, which is very important for the analysis of equipments in chemical engineering.
Introduction Computational fluid dynamics (CFD) is a very flourish field in the last decade since the software of CFD becomes more and more popular in the engineering.
But, CFD is limited in chemical engineering in a way because mass transfer has not been combined with CFD properly at present.
OpenFOAM is a free, open source CFD software package produced by OpenCFD Ltd.
From the simulation, the pressure, velocity and mass fraction can be obtained at any time and any position technically, which is very important for the analysis of equipments in chemical engineering.

CFD simulations concerning diffusion fields completed.
In recent years, a number of numerical simulation studies using computational fluid dynamics (CFD) to predicted indoor particles distribution and deposition.
A study verifies that different particle and droplet CFD models provide different simulation results in which the size of particle and droplet is a critical justification factor by Liu and Zhai [6].
Setup of simulation The above-mentioned different ventilation strategies room was modeled by CFD method.
In this numerical simulation, the following assumptions were given. 1.

Applications of computational fluid dynamics (CFD) techniques for desktop computers and server simulations are addressed in the literature by several authors.
A CFD model was created using Flotherm simulation software, and it was concluded that both the HDDs and the CPU were operating at the allowable temperature limits.
Server Description and Simulation Methodology For verifying and validating our CFD simulation methodology, we used as a case study the Gigabyte R261-3C0 server; its structure and main components are shown in Fig. 1(a).
Comparison of temperature contours, (a) thermographic testing, (b) CFD simulation.
Conclusion and Future Works A computational model was built and validated using CFD techniques for the thermal simulation of the Gigabyte R261-3C0 server.