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And this is the ultimate clearance. 3.The finite element analysis This section is based on finite element theory and making use of FLOTRAN CFD of ANSYS to analyze the process briefly by taking Santana cars’ engine for example.
Figuer 1.The Lubricating Film Model 3.3 Grid partition This paper used FLUID142 hexahedral 8-node unit in FLOTRAN CFD of ANSYS.
Hydrodynamic Lubrication Sliding Bearing Dynamic Characteristic Research Based on the CFD.
Radial Dynamic Pressure Sliding Bearing Spindle Axis Orbit Dynamic Simulation.

And CFD method was taken to calculate flow field of smooth and laser surface texturing core respectively.
And through the numerical simulation to inquiry into the effects of core overlap length decrease on the performance of the valve core hydrodynamic lubrication.
Later importing those mesh files into Fluent for establishing CFD model of two-dimensional flow field and setting flow field parameters.
Simulation and modeling of friction for honed and wave-cut cylinder bores of marine engines, Simul.
(In Chinese) [14] Ma Chenbo, Zhu Hua, Sun Jianjun, Applicable Equation Study of Lubrication Calculation of Surface Texture Based on CFD Analysis, J Mech.

Numerical Study of Selective Non-catalytic Reduction Process in Large Utility Boiler Qingxi CAO1, Hui LIU1,a, Shaohua WU1, Wenyan WU1, Suiying YU2, Zhenzhong LI2, Chunhui YANG1 1 Harbin Institute of Technology, Harbin 150001, China 2 The State Technology Research Center of Power Plant, Shenyang 110034, China aenergyhit@163.com Keywords: large capacity utility boiler; SNCR; numerical simulation; CO additive Abstract.
To provide a theoretical guidance for the application of selective non-catalytic reduction (SNCR) in a large capacity utility boiler, numerical study of SNCR process in a 600 MW utility boiler was performed based on computational fluid dynamics (CFD) code Fluent.
Kim et al. [9] conducted numerical simulation of SNCR on a garbage incinerator, which burns 200t garbage a day.
Wang et al. [10-11] performed numerical simulations of SNCR on a 410 t/h coal-fired boiler.
Conclusions This work performed numerical study on SNCR process in a 600 MW utility boiler using the CFD code FLUENT.

Numerical simulation can reflect a combustion process, which has been widely used for furnace combustion.
Numerical simulation was done under the same conditions as experiment.
Recirculation zone length of simulation is slightly shorter than recirculation zone length of experiment.
Fig.3 Velocity of air outlet at 28% load Burner flow field simulation Calculation of burner flow field.
“In Chinese” [9] Fujun Wang: Analysis of Computational Fluid Dynamics-principle and Application of CFD(Tsinghua University Press, China 2004).

Theory of the numerical simulation Large eddy simulation is a kind of turbulence model which is developing rapidly, the earliest used in the engineering field by atmospheric scientists Deardoff [6].
Large Eddy Simulation of Near Ground Turbulent WindField [J].
A Study on Producing Inlet Data for Large Eddy Simulation [C].
Numerical analysis of diffusion around a suspended expressway by a multi-scale CFD model[J]..Atmospheric Environment,40, 2852-2859
Simulation of ergodic multivariate stochastic processes.

The internal state and rule of raceway was extensively researched through numerical simulation with the development of computer science, numerical algorithm and computational fluid dynamics(CFD).
At present, the main attentions was payed on the simulation of pulverized coal combustion in the raceway, while the simulation of coke movement and combustion in the raceway was not very enough.
The figure 3(b) shows the raceway shape of the simulation in this paper.
Simulation of blast furnace raceway by using CFX software[J].
Computer Simulation, 2008(25), 4:301-304

In this paper, to characterize the flow behavior inside a pipe elbow, the RNG k-ε turbulence model with MUSCL discretization scheme is applied to the simulation.
To address these issues, this paper mainly discusses the numerical simulation of flow erosion with particles in a horizontal-to-vertical elbow with several turbulence models.
Numerical flow simulation in a horizontal-to-vertical elbow CFD-based erosion prediction model As sketched in Fig.1, the physical configuration of a horizontal-to-vertical elbow is subject to erosion damage.
The standard k-ε model proposed by Launder and Spalding and other usual k-ε models have been tailored for planar shear layers and recirculating flows, while Re-Normalisation Group (RNG) k-epsilon model performs the best in this simulation.
The RNG model can offer improved accuracy in rotating flows such as modeling rotating cavities and is also favored for indoor air simulations.

Evolution of the Research on Oxygen-Enriched Intake Air with Variable Composition of a Gasoline Engine Daowei Xie1, 2, a, Ying-ai Jin1, 2, Qing Gao1, 2 1State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China 2College of Automotive Engineering, Jilin University, Changchun 130025, China a xiedaowei@foxmail.com Keywords: Gasoline engine, Oxygen-enriched intake, cold boot, density distribution of oxygen Abstract.
I make a simulation calculation of the oxygen-rich inlet of gas engine by the CFD software Fluent, analyses the oxygen-rich aspirating rules under particular condition and its adaptability to the hemispherical gasoline combustion chamber, and examines the characteristic of the distribution of oxygen constituent in the cylinder after where oxygen and air mixes.
The Simulation of a Gasoline Engine with Oxygen-Enriched Intake Air Combustion Hongfa Chen, from Yantai University, uses GT-POWER software, according to the combustion and heat transfer model and others alike, to simulate and analyze gasoline engine with respectively 22%, 24%, 26%, 28% oxygen-enriched intake air concentration.
The internal combustion engine in cylinder air motion of 3-d numerical simulation.
Simulation of Oxygen-Enriched Intake Air Combustion in Gasoline Engine.

The numerical simulation and visual analysis of the aboved flow field was carried out.
In the valve port, the mass flow simulation value was compared with the calculated value.
The simulation and analysis of the results When pressure difference is 1MPa and the valve port openings are different, the results of pressure and velocity simulation are shown in Fig. 5, Fig. 6 and Fig. 7.
Fig. 8 Spool valve’s diagram of flow Fig. 9 Mass flow of flow field simulation and theoretical Table 2 The mass flow of simulation and theoretical calculation when pressure difference is 1MPa Valve opening 1(mm) 1.5(mm) 2(mm) Mass flow (kg/s) Simulation value 0.0741 0.1157 0.1568 Cd=0.61 0.0788 0.1192 0.1580 Cd=0.56 0.0723 0.1094 0.1451 Compared with the results of the simulation, it can be seen that the simulation result is identical with theoretical calculation result, which has certain theory significance and practical value to improve the performance of the servo valve.
(In Chinese) [2] Fujun Wang: Analysis of computational fluid dynamics: theory and applications of CFD software.

Mohammad, “Simulation of Nano Carbon Tube (NCT) in Thermal Interface Material for Electronic Packaging Application by Using CFD Software,” Mater.
Mohammad Amizi, “Comparison between Thermal Interface Materials Made of Nano Carbon Tube (NCT) with Gad Pad 2500 in Term of Junction Temperature by Using CFD Software, Fluent,” Mater.
Salim, “A New Invention of Thermal Pad Using Sol-Gel Nanosilver Doped Silica Film in Plastic Leaded Chip Carrier (PLCC) Application by Using Computational Fluid Dynamic Sofrware, CFD Analysis,” Adv.
Azman, “Thermal Management of Electronic Components by Using Computational Fluid Dynamic ( CFD ) Software , FLUENT TM in Several Material Applications ( Epoxy , Composite Material & Nano-silver ),” Adv.
Mohd Sukhairi, “The Comparison between Four PLCC Packages and Eight PLCC Packages in Personal Computer (PC) Using Computational Fluid Dynamic (CFD), FLUENT SoftwareTM Using Epoxy Moulding Compound Material (EMC),” Adv.