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Recently, this work was rewritten by Dodge [4], in which numerical methods were updated using more efficient simulation codes.
Numerical simulations are performed using the commercial CFDsolver ANSYS-Fluent that is based on thevolume-of-fluid technique.
The simulation model along with the computational grid is shown in Figure 1.
Thus, an upwind scheme with the Piecewise Linear Interface Construction method (PLIC) for the surface reconstruction is adopted in the simulation.
When H/r<1, damping ratio larger than 1; when H/r>1, damping ratio is approach 1. 2) When take into account four influence factor, using VOF method can calculated the sloshing damping effectively. 3) Due to the complexity of liquid sloshing in a tank and the difficulty of getting experimental data for sloshing in a low-g environment, Numerical simulations using CFD can be used as an effective design/analysis tool.

As the axial symmetric structure of the thruster, the simulation model is half a single path with symmetric operation.
In virtual 3D flow field, the dissociation characteristic and temperature variation of ammonia mixture is quite different from the lumped parameter characteristic, thus a CFD simulation is conducted to analyze the temperature and species variation in heat exchanger and nozzle.
The mole fraction of the species calculated from CFD simulation is identical with the experiment data.
It proves that the simulation results are believable.
Fluid-solid coupled heat transfer and flow simulation of platelet heat exchanger in thermal thruster.

Adopt finite volume method, simulation the hydrostatic bearing internal fluid temperature field under different flow rates on the speed of 6R / min.
Numerical simulation hydrostatic thrust bearing oil film temperature field, can find a general high temperature region, and then take effective control temperature.
The numerical simulation result does not appear divergence phenomena, indicates that the equation using finite volume method is stable.
Numerical simulation of temperature field in large size hydrostatic bearing.
Static Flow Simulation of Hydrostatic Bearing Ellipse and Sector Curve Based on Fluent.

Numerical Simulation and Structure Optimization of the Main-Control Reversing Valve of Electrical-Hydraulic Hammer Shiwen DU a Yongtang LIb School of Material Science and Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 030024,China a tykddsw@126.com , bliyongtang@tyust.edu.cn Keywords: numerical simulation Hydro-finite element CFD Electrical-hydraulic hammer Abstract: Based on viscosity hydrodynamics and hydro-finite element theory, flow field of the main-control reversing valve of electrical-hydraulic hammer was simulated.
Oil fluid parameters, coefficient of viscosity µ=0.018N.s/m2, density 900kg/m3; payload type is transient flow. 3.1 Simulation of steady-state hydraulic force It is difficult to control the manipulation process of main-control reversing valve of 15KJ electrical-hydraulic hammer, according to analysis, which results from the resistance deriving from axial force of steady-state hydraulic force inside valve cavity.
Obviously at this time there are a number of axial velocity components at the valve port, which can compensate steady-state hydraulic force. 3.2 Simulations of inlet throttle and outlet throttle of slide valve There are two slide valve structures, and one is outlet throttle slide valve, and the other is inlet throttle slide valve.
Dynamic Simulation of Commutation Process of Minitype Hydraulic Directional Value.
Vol.34(2002):P489 [2] Mahesh C and Kwon T H, Accuracy and Efficiency of Multi-variant Finite Element For Three-Dimensional Simulation of Viscous in Compressible Flows.

Through numerical simulation with CFX at a single blowing ratio of 0.5 and Reynold number of 11000, we analyze and compare the performance and behavior of five kinds of cratered holes with the conventional cylindrical hole.
The simulation employs k-ε turbulent model and wall function.
Their large eddy simulation shows that the contoured crater can improve cooling performance significantly because it can generate a pair of vortices which diminish the main kidney-pair vortex caused by the coolant jet.
Using ICEM CFD, an unstructured fine mesh was generated.
The simulation was run with CFX.

These estimates require the use of parallel technologies for simulation.
The furnace produces almost vertical warm air flow Summary Our numerical experiments demonstrated the effectiveness of air exchange simulation in a large industrial building.
You, CFD simulation and optimization of the ventilation for subway side-platform, Tunnelling and Underground Space Technology. 22 (2007) 474-482
Morozov, The information model of program complex for optimization and control of ventilation system based on direct gas-dinamic simulation, Vestneyk Volgogradskogo gosudarstvennogo universiteta.
Zhumaliev, Formation of transient regimes in the simulation of aspiration flows: Kelvin – Helmholtz instability, Vestneyk Volgogradskogo gosudarstvennogo universiteta.

Simulation on Ground Temperature Change of GSHP System in Severe Cold Regions Li Bai1, a, Peng-xuan Wang1,b 1Jilin Jianzhu University, Changchun China 130118 abaili0308@163.com, bwpx890307@163.com Keywords: Ground-source heat pump; ground heat; thermal equilibrium; Abstract.
In this thesis, for the case of ground-source heat pump system was used in a project of university library in Changchun, which city in the severe cold region.According to the thermo physical parameters of soil about the library and the simulation results of the dynamic load on it by the simulate software DEST, then using GAMBIT software to establish physical model for parts of the well group, and hourly simulate the 5 years operation of some heat exchanger of the well group by using FLUENT software, so that the simulation results of applicability of the thermal compensation method in severe cold area can be demonstrated.
By using CFD what is a special pre-processing software Gambit to establish model and dividing grid as show in Figure 4, the simulation software to read the grid using Fluent heat pump operation, for five years the change of soil temperature field.
The simulation runtime system physical parameters show Table 2.
Numerical Simulation on Phase Change Heat Transfer of G round -Source Heat Pump System in Cold Region.

By numerical simulation of finishing project, its feasibility is defined.
Fig.2 Basic principle diagram of gas-particle two-phase compulsive circulation flows finishing 1. nozzle 2. circulation formation component 3. oriented component 4. particle 5. isolated net 6. workpiece Numerical Simulation For avoiding blindness of experimental research and improving foresight of practical application, numerical simulation of gas-particle two-phase compulsive circulation flows finishing is done through computational fluid dynamics(CFD) software(Fluent, Gambit), and it provides credible theoretic basis for thorough research.
Its feasibility and finishing effect is defined by numerical simulation and experimental study.

Numerical Simulation on Effect of Obstructing Airflow by Different Outlet Parameters of Mine Air Curtain Ling Zhao1,2,a ,Zhongan Jiang1 1 Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing, China 2 Resource and Environmental Engineering School, Jiangxi University of Science and Technology, Ganzhou, Jiangxi, China a jxlgdxzl@163.com Keywords: mine air curtain; outlet parameters; numerical simulation; the amount of air leakage; obstructing airflow capability Abstract.
According to characteristics of air curtain obstructing airflow in mine tunnel, utilized turbulent flow dynamic viscosity method, and three-dimensional steady-state incompressible Navier-Stokes equations of computational fluid mechanics, the simulation of flow field in mine tunnel was made by changing outlet parameters of air curtain.
When the parameters are the same, the obstructing airflow capability of acyclic air curtain is better than that of circular air curtain.The result of simulation analysis of mine air curtain can be used as the basis for optimized design.
In the simulation, the outlet air volume was 12.87 m3/s, the outlet angle was 30°, the relation curves about the amount of air leakage and outlet width were gained and were shown in Fig.4.
Flexible damper numerical simulation and application[J].Journal of China Coal Society, 2010,35(Sup):123-127 [2] Qianli Zhao Qian,Gao, Chuangzhou Gao.Cutting Airflow Theory Model and Applied Study of Air curtain Used in Mine[J].Nonferous Metals(mine section) ,2007,59(5):39-42 [3] Haining Wang, Zhongyu Niu, Yanjun Wu.Study of controlling circulated air flow by air curtain in underground mine[J].Mining Research and Development, 2010,30(1):84-87 [4] Haining Wang, Hongying Zhang, Test and application of air curtain in mine[J].Journal of China Coal Society,2006,31(5):615-617 [5] Bao-yu Han, Ying Xiong, Shuangqiao Chen.Numerical simulation of cavitation around 2-dimentional hydrofoil[J].Chinese Journal of Hydrodynamics, 2009,24(6):740-746 [6] Zhiyi Sun, Xiaorong Wu.Discussion and application of CFD numerical simulation technology[J].Water Conservancy Science and Technology and Economy, 2008,14(2):126-128 [7] A.M.Foster, M.J.Swain, R.Barrett, etc．Three-dimensional effects of an air curtain

The response time is predicted through simulation with the contact angles ranging from 130° to 170°.
CFD simulation for dynamic behavior We employ the VOF model combining surface tension model and contact angle effect to predict the mercury meniscus shape and position in microchannel as time elapses [5].
The response time is predicted in simulation, when the contact angles ranges from 130° to 170°.
Early conduction is observed in simulation as shown in Fig. 8.
The simulation analysis on the dynamic behavior of the switch shows that the response time is dependent on the contact angle and decrease slightly with the increase of the contact angle.