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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.

All formulas of the program used medium physical values calculated on the transversal section flow of the pipe and are used for simulation of flow in industrial installations.
Theory and simulation, Publishing Universitaria Craiova, 2011
Numerical calcullus and C.F.D. analysis, Publishing Universitaria Craiova, 2016

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.

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.

Simulation Study for the Effect of Oil Viscosity on Performance of Full Metal Single Screw Pump Jun fei Wu1, a,Xiao Wei2,b,Xue zheng Yang2,c,Ying Yu2,d 1Sino-German Technology Faculty, Qingdao University of Science and Technology, Qingdao 266061, P.R.China 2College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, P.R.China ajfw_2002@sina.com.cn, bweixiao881023@126.com, c627599428@qq.com, dyuyingwyd@163.com Key words: full metal screw pump; finite volume method; oil viscosity Abstract: The oil viscosity affects the pump filling coefficient, so it is the important parameter affecting lifting performance of metal screw pump.
Viscosity is the important factor that affect volumetric efficiency of the pump , so this paper will use the CFD software to simulate and analyze the effect of the oil viscosity on the pump performance. 1 The Calculation Model of analysis of Flow Field In order to explore the effect of clearance volume on the pump outlet pressure, this paper will generate the analysis model of GLB500 type screw pump with different clearance value.

Fractal analysis of raceway boundary in Blast Furnace Model Ye SUNa, Ren CHEN, Guoxi WU, Lina SUN Department of Metallurgy Engineering, Liao Ning Institute of Science and Technology, 117004, Benxi, China asunye820412@sina.com Keywords: raceway boundary; physical simulation; particle velocity contour; fractal Abstract.
The shape of raceway can be obtained by dissection survey and mathematical simulations.
Toshihiko [10] calculated the instantaneous velocity of every particle through CFD+DEM, and then the raceway boundary was defined by the iso-contours of instantaneous coke particle velocity scalar.
It can be used as original boundary conditions of the flow and chemical reaction in the raceway region of the theoretical and mathematical simulation.

Effects of Exhaust Gas Recirculation on Combustion and Emission of a Marine Diesel Engine Yu Hongliang1,a *, Yu Gongzhi1,b, Duan Shulin2,c 1Dalian Ocean University, Dalian, Liaoning, 116023, China 2Dalian Maritime University, Dalian, Liaoning, 116026, China ayuhongliang19852@163.com,byugongzhi@dlou.edu.cn,cduanshulin99@yahoo.com.cn Key words: diesel engine,exhaust gas recirculation,Emission characteristics,numerical simulation Abstract: Taking into account the formation of thermal NO, the local balance method and Extended Zeldovich model were used in the paper to simulate the combustion and emission of a marine diesel engine with the AVL FIRE software and to verify the model.
Initial Conditions of Calculation In this paper, the object of simulation was a marine diesel engine.
Fig. 1 Numerical simulation model of TDC Results Analysis Model Validation.To ensure the reliability of the model and accuracy of the calculated results, the calculated results were compared with experimental results in this paper.
[5] AVL FIRE．CFD-Solver_04_ICE-Physics-Chemistry[M]．Austria: AVL LIST GmbH 2006．

Having the two models coupled, we can perform simulations and predictions of many physical phenomena.
Two way Fluid-Structure Interaction (FSI) techniques were used for simulation of the interaction between the structure and the fluid at the common boundary.
Krejsa, Software application of the DOProC method In: International Journal of Mathematics and Computers in Simulation Vol. 8, No. 1 (2014), pp. 121-126 ISSN: 1998-0159
Kozubkova, CFD simulations of the effect of wind on the spontaneous heating of coal stockpiles.
Grajciar, Simulation of the aquaplane problem.

aronny2ii@hotmail.com, bshahrin@uthm.edu.my, camirk@uthm.edu.my Keywords: Nozzle hole shape, spray characteristics, cavitation, Jatropha oil, simulations Abstract.
The parameters are discussed based on an overview of the research in the field of simulations with nozzle shaped injectors.
Battistoniet al. [17] had conducted simulation by CFD for different fuels of diesel and biodiesel and found both fuels achieved similar values with the cylindrical (cavitating) hole, meanwhile diesel slightly prevails when the nozzle’s hole is conical.
Spray simulations for both conical and cylindrical hope shaped Numerical analysis was done by using biodiesel and diesel as comparison.
[10] Ming Jia, M.X., Hong Liu, Wei-Haur Lam, Tianyou Wang, Numerical simulation of cavitation in the conical-spray nozzle for diesel premixed charge compression ignition engines.