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Sod (Shock Tube) [10] , a common test for the accuracy of CFD codes, is utilized to test the ability of Maccromack’s algorithm in solving the initial boundary value problem (IBVP) for the system of equations with shock wave behavior.
Table 1 Comparison between numerical results and experimental results Ballistic Parameter Experimental results Simulation results Maximum chamber pressure (MPa) 320.00 320.85 Muzzle velocity (m/s) 858 862.69 Conclusions In this work, the two-phase flow mathematical model for the solid granular propellant and its products of combustion inside large caliber NGGPS during interior ballistic cycle is described.
[6] Lowe C., CFD modeling of solid propellant ignition, PhD thesis, Cranfield University, Cranfield, (1996) [7] John D.

Ji-Hang Luo [4] takes the rotor blades with three different parts of NACA airfoil as a reference, and uses the main model of commercially available NORDEX plant's N-50 800kW wind turbines as a simulation object.
By using of STAR-CD CFD software for simulation, he compares the wind power, flow and torque under different available wind speeds to find the better airfoil.
This feature is that the use of the wind turbine simulation model to establish the flow field domain model, simulate the operation of wind turbine rotor when the wind load.
In fact the wind machine in the load situation is very complicated, and the actual wind conditions and wind machines are non-stable, so in the simulation of this paper the ideal wind conditions are assumed.
[4] Jie-hang Lo，Numerical Simulation on a Horizontal-Axis Wind Turbine with various Rotor blades，National Taiwan University Technology Department of Mechanical Engineering, Master's thesis, 2006.

The design work employed the CFD simulation, which ensured the required homogeneity of the airflow from the chamber outlet and the effective mixing of the streams of the blown in air with the air located near the inlet [13, 14, 15, 16].
Kosowska, CFD methods in designing a heat flow calorimetric chamber simulating indor air conditions, Energetyka. 24 (2012) 64-67 (in Polish)
Wojnar, CFD methods in designing a heat flow calorimetric chamber simulating cold weather conditions, Energetyka. 24 (2012) 67-70 (in Polish)

Energy separation phenomena of those gases were investigated by means of three-dimensional Computational Fluid Dynamics (CFD) method.
With the gradual deepening of experimental research and numerical simulation calculation, the vortex tube has been applied to many filed such as a lot of compressed gases source, electricity no use or wish less to use, and its requirement less cooling capacity position and played an important role in industry.
The fixed component ideal gas Simulation temperature effect becomes small, and because of the energy conversion, due to the different freedom degrees [10] cause collision loss occurs between the different gases inside the vortex tube.

The third one is simulation and discussion.
Simulation and Discussion We use ESI-CFD+ software package for simulation with floating and non-floating chamber structures.
As in Fig. 8 the thermal sensors can be put at anyone of the three points to be trade-off later by simulation.

The mathematical model used for simulations, was partly validated with experimental measurements.
To obtain it, numerical simulations are performed.
To investigate non-metallic inclusions separation in the tundish numerical simulations have been performed.
To simulate the turbulent flow of steel through a tundish and next the non-metallic inclusion separation in the investigated tundish, a CFD software code Fluent was used.
The results of numerical simulation show that the worst conditions for inclusions separation has strand no. 3.

., Qiqihar, Heilongjiang Province, China Keywords: heavy hydrostatic bearing; FEM; temperature field Abstract: Based on heat transfer theory, thermodynamics steady state equation of hydrostatic bearing, thermal mathematical model of hydrostatic bearing and boundary condition of numerical simulation is established.
The numerical simulation results could provide theoretical basis for temperature control scheme design which will improve the stability and reliability during hydrostatic bearing operation.
Figure 2 shows the FE model of workbench generated in ICEM CFD software which has 457643 grids totally.
Temperature field of hydrostatic bearing simulation provides theoretical basis for heat control system design, it is positive for reliability and safety of bearing operation improving.

EGR system testing-Laboratory simulaiton In EGR system simulation test, using the synthetic intake to simulate the effects of recycled waste gas on engine performance and emissions, and simulation device is shown in figure 2.
Figure.2 Sketch of EGR system in laboratory simulation Choice of EGR system arrangements EGR system can be divided into high pressure loop system and low pressure loop system, and it is shown in figure 3.
A Controlled EGR Cooling System for Heavy Duty Diesel Applications Using the Vehicle Engine Cooling System Simulation.
Modifying an Intake Manifold to Improve Cylinder-to-Cylinder EGR Distribution in a DI Diesel Engine Using Combined CFD and Engine Experiments.

In order to evaluate pollen removal efficiency of air-purifier, we have developed the computation software named CAMPAS (CFD and Aerosol Motion Property Analysis Suite)[7, 8].
Inlet area 2.23×10-1 [m2] Outlet area 6.25×10-2 [m2] Fig. 3 Simulation model air-purifier.
Firstly, it is able to simulate a turbulent flow by a large-eddy simulation (LES) model.
The mesh size for the flow calculation is 5 cm in the horizontal direction and 2.5 cm in the vertical direction; it is small enough to validate the simulation results.
Feasibility study has done by both turbulent flow and particle-tracking simulation.

But in some situations the method of a correction factor is not accurate, because the heat loss changed by different type of couplings, the method of simulation is not accurate yet because they ignore the axial heat conduction when the temperature of coupling is higher than the outer face of the pipe, and the methods by conducing experimental device is too complicated, which demand precision instruments and long test time.
In the literature, the temperature of coupling is simulated by CFD software, and then the heat loss is calculated by the convection heat transfer model in steady and radiation heat transfer model，and the heat loss is 475.21W.
Wang, Heat transfer experiment and simulation of vacuum heat-insulation oil pipe coupling, J.
Xiang, Heat-loss experimental test and numerical simulation in wellbore steam flow process, J.
Zhao, Simulation and calculation of the thermal conductivity of vacuum heat-insulation oil pipe coupling without lining, J.