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According to the actual condition select four different pressure value simulation,such as shown in table 1.
The simulation field of automotive redirector as the export connected pumping:the inlet pressure Ps =700000Pa,the outlet pressure Ps=-90000Pa flow field simulation results as shown in figure 3, 4, 5.
Auto power steering gear flow channel model simulation numerical results provide a basis for ejector designing.
References [1] Zhanzhong Han , Jing Wang Fluid engineering simulation calculation examples and applications Beijing Institute of Technology Press 2004.
(In Chinese) [3] Desheng Zhang , Jiyu Zhao Flow field analysis and structure optimization of peach shaped chamber hydrodynamic coupling based on CFD China university of mining and technology journal 2010 687-692.

In this study, a computational fluid dynamics (CFD) study based on a finite element method (FEM) was performed for the human aorta with four different flow time patterns (healthy to full intra-aorta pump support).
[5] YJ Xuan, Y Chang, KY Gu, et al, “Hemodynamic Simulation Study of a Novel Intra-Aorta Left Ventricular Assist Decice,” ASAIO JOURNAL, USA, 58(5), pp: 462-469, September, 2012
Ladd, “Numerical simulations of particulate suspensions via a discretized Boltzmann equation.
Ladd, “Numerical simulations of particulate suspensions via a discretized Boltzmann equation.
Tarbell, “Numerical simulation of pulsatile flow in a compliant curved tube model of a coronary artery,’’ .

LTD., Qiqihar Heilongjiang Province, China aliyonghai59@Yahoo.com.cn, bxiawa-1972@163.com, chustyuxiaodong@163.com Keywords: Constant flow, Hydrostatic center frame, Temperature field, Simulation research Abstract.
In order to solve the thermal deformation of the hydrostatic center frame in the heavy type horizontal lathe, a simulation research concerning temperature field of hydrostatic center frame is described.
The film lubrication characteristics of hydrostatic center frame directly affect the work of turning performance, reliability and longevity, therefore the temperature characteristics of the hydrostatic center frame was researched based on the theoretical analysis and numerical simulation in this paper.
Numerical simulation Model of bearing pillow.
Three-dimensional geometry model of the oil film is produced by software UG, then the model is introduced into the pre-processor ICEM CFD to generate grid.

Governing Equations The fire dynamics simulator (FDS) is a computational fluid dynamics (CFD) software package developed by the Building and Fire Research Laboratory (BFRL) of the United States National Institute of Standards and Technology (NIST) to simulate fires.
Computer Simulation Model Developed The scene was a one-story cottage.
Fig. 2 Layout of rooms for the fire site simulation Results and Discussions Photos taken after the fire by Fire Department reports were used to conduct qualitative and quantitative simulation verification.
Therefore, the simulation result was close to the actual situation (Fig.4).
During the early stage of the simulation, the CO concentration in Room 2 at 117s was only 82 ppm.

Thickness measurements using image analysis are performed and comparisons with the simulation results are satisfactory.
Simulation Results The blow-moulding stage is simulated by the use of the FEM commercial software POLYFLOW.
Polyflow is a Finite-Element Method (FEM) Computational Fluid Dynamics (CFD) program dedicated to the resolution of fluid problems involving viscous and viscoelastic fluid flows [1].
This resulting median profile is used for comparison with the simulation.
The simulation results shows good agreement with experimental measurement.

The suggestions are supported with calculations aided by computational fluid dynamics simulations.
In order to estimate the ṡ and �� values relevant to flow within CR and TR, the current experiments were reconstructed using computational fluid dynamics (CFD) simulations with the aid of a commercial package known as Flow-3D [3].
Enhanced ṡ and �� magnitudes were observed from CFD simulations at the position indicated by the arrow in Fig 4 which, in both cases, corresponds to the entry point to the runner channel leading to the tensile test piece.

Keywords: Simulation, mass, heat, rough rice, ellipsoid, CFX.
According to Norton and Sun [6], CFD studies has been used to quantify physical phenomena in food industry such as sterilization, mixtures of compounds, drying process, storage and refrigeration.
This way, numerical simulation of the rough rice drying process provide one way to analyze the effect of different variables of grain, distinct drying conditions and provides answers on the drying kinetics that may contribute for more detailed understanding of the physical phenomenon of heat and mass transfer in solid mainly when the study is related to complex geometry.
Results and Discussion The values of relative humidity and temperature of the air, and temperature and initial moisture content (in d.b and w.b.) of the rough rice grain used in all the simulations, as shown in Table 2.
Table 2 - Physical parameters used in the simulations.

Decreasing aerodynamic drag for the truck becomes more and more important, which is investigated in this paper based on the CFD method.
A set of simulations for the original truck is carried out.
Fig. 4 Van Structure Parameters For each parameters list above, we take a set of RANS simulations.

Using the method of numerical simulations to study fluid dynamic characteristic of underwater vehicle rotary motion, using the N-S equation turbulence model description of the steady rotation of the vehicle, this paper studies the numerical calculation method of aircraft rotating derivative underwater, using UDF programming to produce a stable pressure rotation the flow field, set up an numerical turning basin.
Then based on the simulation analysis the influence of the different radius of gyration and different angle of attack on the vehicle motion.
As a result, numerical simulation, which adapts to the design of underwater vehicle, becomes an inevitable choice.
Using CFD to build a numerical rotating arm basin will become a hot area of research.
Figue 5 The curve of lift’s rotational Figure 6 The curve of moment’s rotational derivative with the angular velocity changing derivative with the angular velocity changing Figure 7 The curve of lift’s rotational Figure 8 The curve of moment’s rotational derivative with the angle of attack changing derivative with the angle of attack changing Conclusion The rotary motion’s parameter of vehicle can be mainly gained by holding experiments in a rotating basin.Compared with this approach,shorter time, lower cost and higher repeatability are achieved by the approach of numerical simulation.

By evaluation and numerical simulation of the pump, results indicate that the failure occurred because of crevice corrosion and cavitation corrosion on seat surface and seal face, respectively.
SEM image on the seal surface As the situation of the fluid flow in the valve seat is quite complicated, simulation of valve opening and closing process is done by applying numerical simulation technology to obtain fluid pressure distribution in the valve seat.
The RNG k–ε turbulence model available in the CFD code FLUENT and PISO algorithm were used to solve the coupled system of governing equations.
Simulation of the suction valve (a) Pressure distribution (b) Volume fraction of vapour distribution Fig.8.
Simulation of the outlet valve Measures and Effects.