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Numerical Simulation on Process of Flow and Heat Transfer in Upright Magnesium Reducing Furnace Feng Junxiao1,a, Cheng Qibo1,a and Yu Sijing2,b 1School of Mechanical Engineering, USTB, Beijing, China 2 Zhengzhou Magnesium Science and Technology Co.
Ltd, Henan, China a jxfeng@ustb.edu.cn, b yusijing@163.com Keywords: mathematical model; numerical simulation; upright magnesium reducing furnace; flow field; temperature field Abstract.
And numerical simulation is performed further with the commercial software FLUENT.
In order to study the impact of reducing pot standard on the product cost, the numerical simulation of different standards of reducing pot has been done.
“A Brief Introduction to Fluent-a General Purpose CFD Code,” Journal of Hydrodynamocs, vol.16, 2001, No.2, pp.254-258

Based on the finite volume method and the pressure-velocity coupling scheme of the SIMPLE algorithm with the standard k-ε turbulent model, the CFD software was used to solve the Navier-Stokes equations to calculate the pressure field in the bearing gap.
The approach Based on the finite volume method and the pressure-velocity coupling scheme of the SIMPLE algorithm with the standard k-ε turbulence model, this study utilized the CFD software, FLUENT, to solve the three dimensional Navier-Stokes equations to study the flow field of a partially porous aerostatic journal bearing for its physical behaviors such as pressure.
In order to simplify the numerical simulation, the following assumptions were made for the flow field: (1).
Simulation techniques Fig. 1 Cross sectional view of the spindle and the partially porous aerostatic journal bearings.

With analysis of mechanics of materials based on shut-in water hammer pressure and wellhead pressure while rescuing, and fluid mechanics of uncontrolled blowout based CFD, a rescue equipment for uncontrolled blowout in offshore drilling has been invented, and proposing a rescue method.
Therefore, the paper have studied the characteristics of offshore drilling blowout fluid for a single liquid phase and single phase gas flow based on CFD software, then draw a method and equipment for offshore drilling blowout rescue.
Blowout fluid strongly interfere with the part of the flow field above the seabed original wellhead device, and the lower part is small by the numerical simulation.
According to the numerical simulation, the blowout fluid mainly impact the velocity field and pressure field above the new rescue equipment, and it has little effect on the field below, so two choke valves are designed on the equipment above.

The result shows that flow pattern from simulation has the same trend with experimental results.
The simulation flow pattern has the same trend with the experimental result.
The simulation flow pattern has the same trend with the experimental result.
Jeong, Large eddy simulation of turbulent flow in a T-junction, J.
Dakhil, CFD Simulations and Flow Analysis Through a T-Junction Pipe, International Journal of Engineering Science and Technology (IJEST), 4 (2012) 3392-3407

By means of numerical simulation, the guide wall shape optimization study, and combining with the engineering practice, this paper proposes a microbend flood guide wall of new type.
In this paper, we can forecast the effect of modified guide wall for Channel’s flow structure adjustment by using the method of numerical simulation research[4].
Reducing the effect of reflux area, and in data simulation showing the superiority.
It make water below the surface of the water to flow, stopped flow sedimentation in approaches, and also led to the current mainstream to stay away from such direction, finally simulation experiments prove that this new type of diversion wall of diversion and rectification effect is quite effective.
References [1] FamengWang, ZongfuFu, Jiacai Lv, Mingming Liu,Model tests on influence of combined construction of sluices and pump stations on estuarine navigationAdvances in Science and Technology of Water Resources (In Chinese),2012（3）：29-31 [2]Yonghai Yu,Hui Xu,Yongguang Cheng,CFD numerical simulation on modification of flow pattern with flow deflector at fore-bay of pumping station.Water resources and hydropower engineering(In Chinese) 2006-9,41-43 [3] JGJ305-2001《the overall lock design specification》In Chinese [4]Xiaoxu Li,,Yuan Zheng,Yuanting Mao,Xi Li, Chao Xue,Based on Fluent pumping station side of the pool rectifier forward numerical simulation and optimization(In Chinese),Water Conservancy Science and Technology and Economy,2011-4,1-2

Wind speed distribution and wind pressure distribution of hill surface at each case were depicted by the simulation results; the obstacle of conducive for wind farms was obtained by comparing flow field distribution of each case.
Numerical Simulation Condition Model selection, the computational domain selection and grid division.
The grid division software has many kinds, such as: Gambit, TGrid, GeoMesh and ICEM-CFD etc.
Because Gambit meshes support better for the numerical simulation software Fluent, the Gambit was choired for meshing [4].
In addition to the ground, other surface into triangular mesh spacing of 100m, surface mesh is finish, the tetrahedral unit grid division on the simulation, grid generation using Tgrid.

For the solution of this problem the numerical simulations of a thermal condition of implantable part of artificial heart mechatronic unit was carried out and based on results of the solution of a stationary task of heat conductivity.
The carried-out simulation of the established thermal state at various power of thermal losses showed lack of an overheat of a surface of the mechatronic unit housing above critical temperature during the continuous work for a long time and principle possibility of application of the developed design as implantable system.
For the solution of this problem the numerical simulations of a thermal condition of implantable part of artificial heart mechatronic unit was carried out and based on results of the solution of a stationary task of heat conductivity by finite element method.
Results and discussion The simulation results are presented in Figs. 2 - 4.
Zhdanov, CFD research of hydrodynamic parameters of artificial ventricles for pulsating LVAD, Proc. 2nd Technical Congress on Resources, Environment and Engineering (CREE 2015), (2015), pp. 9-14

Literature Review A Notable number of research studies investigate the effect of wake interactions between turbines on power production of wind farm .These studies developed a mathematical programming models that maximize the power production while minimize wake effect based on numerical approaches that can split on two approaches :Heuristic methods for optimization and computational fluids dynamic (CFD) for investigation and analysis.
The CFD results proved that the output power of downstream turbines increase as the separation distance rises.
Generally wind velocity deficit is calculated using analytical models which are simple to be solved analytically or otherwise considered computational models based on CFD method [12,22].
Xie, C .Archer, Self similarity and turbulence characteristics of wind turbine wakes via large ddy simulation, W.Energy .18.10 (2015) 1815-1838
Mikkelsen , Comparison of engineering wake models with CFD simulations.

Simulation Program and vertification A.
The bottom-up approach was adopted in this simulation program.
Fig.4 presents the overall structure of simulation module.
The results of simulation are shown in Table I, and it could be found that the difference between experiment and simulation is very small.
Conroy, "Multiphase CFD Simulations of Solid Propellant Combustion in Gun Systems," in 40th Aerospace Sciences Meeting & Exhibit, Reno, Nevada, 2002

The flow field of liquid column scrubber with different inlet structure was respectively simulated by a commercial CFD code, Fluent.
Numerical simulation would be carried out, aiming at obtaining the optimal inlet structure, which is significant to the promotion and application of multi-stage liquid column desulphurization technology.
Numerical Simulations Model Establishment.
The discrete scheme used in this simulation was second-order upwind.
Simulation of SO2 Absorption in a Venturi Scrubber．Chemical Engineering Communications, 2010, 197(7): 934-952