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Numerical Simulation of Flow-induced Wall Shear Stress of a one strand Tundish Design Zhibing Tian1,a, Yan Jin1,b, Hongyu Li1,c 1 Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology Wuhan 430081, P.
China azhibingtian2011@163.com, bjinyan203558@yahoo.com.cn, clihongyu861214@163.com Keywords: Tundish, Numerical Simulation, Wall Shear Stress, Service Life Abstract: In this paper, the flow-induced wall shear stress on the wall of a one Strand tundish has been computed by a 3-D mathematical model.
Based on the computational fluid dynamics (CFD) ,the mathematical model of the tunish are built in this paper ,and the wall shear stress of the tundish, which has 12 schemes with different layout of the flow control devices(weir, dam), are calculated.

By the mathematical simulation, fluid flow and heat transfer of molten-steel in a tundish of a billet caster under different conditions (bare tundish and tundish with flow control device) are analyzed.
Numerical simulations of are carried out with the finite-volume commercial code FLUENT using the realizable k-ε turbulence model.
The mathematical simulations were run on a INTEL CORE i7 processor computer with the Computational Fluid Dynamics (CFD) software.
The analysis of results of computations and numerical simulations enables the following conclusions to be drawn: 1) The use of turbulence controllers (with different geometries) in the working space of the facility under consideration significantly influences the values of particular steel flow shares within the whole tundish volume. 2) The proposed configurations of tundish working space furnishing result in a reduction of the liquid steel residence time, which positively develops the casting conditions. 3) An optimal tundish configuration is characterized by an increasing plug flow, with a decreasing dead flow.

Focused on the operation performance of the compressor, the detailed flow structure in the compressor was investigated by using numerical simulation.
As a trade-off of compressor efficiency and matching performance with turbine and other components, CFD Research Corporation (CFDRC) confirms the single stage mixed-flow compressor for the ground prototype of ATR [2].
All the numerical simulations in this paper are performed by solving the steady compressible Navier-Stokes equation using the ANSYS CFX software package.
And the characteristic curve of the compressor is calculated by numerical simulation through regulating the back pressure.
Summary In this paper, the aerodynamic design, characteristic analysis and numerical simulation of mixed-flow compressor for SPATR are performed.

., Centrum Excellence Telč, Batelovská 485, 58 856 Telč, Czech Republic avladimira.michalcova@vsb.cz, bkuznetsov@itam.cas.cz, cjiri. brozovsky@vsb.cz, dpospisil@itam.cas.cz, Keywords: aerodynamics, wind tunnel contraction, CFD Abstract.
The DES models uses large vortexes in the centre of the flow pattern by direct simulation (LES method) and in the proximity of a wall, it uses the RANS method, in particular, it is SST k-w here.
Lausova, Experimental Measurement and Numerical Simulation of Dynamic Thermal Performance of External Timber Frame Wall.

Wu Chen-sheng [10] presented a numerical simulation method of free ship model towed in still water, the comparison results of resistance, sinkage and trim show good agreement with those of experiments.
It has been selected as a benchmark case for CFD computations of ship resistance.
Numerical simulation on hydrodynamic characteristic of a trunk ship[J].
CFD Calculation for Resistance of a Ship Moving near the Critical Speed in Shallow Water[J].
Numerical simulation of free ship model towed in still water[J].

Therefore the numerical simulation is an important tool in fire investigation [2].
The FDS simulation results are very close to the subsequent full scale experiment which proves the feasibility of FDS simulation reappearance fire scenario.
As the research of smoke diffusion, the CFD is used to simulate the three-dimensional field.
Discussion of simulation results Two fire scenarios were set here, named scenario 1 and scenario 2.
Besides, Simulation in addition to the detection point was set for detecting temperature and smoke density changes

The 2-D numerical wave flume, based on the Reynolds Averaged Navier-Stokes equations and the standardturbulence model, was developed to simulate the turbulent flows with the free surface, in which the volume of fluid (VOF) method was used to handle the large deformation of the free surface and the relaxation approach of combined wave generation and absorbing was implemented, utilizing the commercial CFD software-FLUENT.
To investigate the effect of wave height and wave period on initial failure velocity, various wave heights are chosen for the numerical simulation when the wave period: wave heights (), and when the wave height, the wave periods ().
[4] LU Yong-jin, LIU Hua, WU Wei, ZHANG Jiu-shan: Numerical Simulation of Two-Dimensional Overtopping against Seawalls Armored with Artificial Units in Regular Waves.

According to the mathematical model, the melt flow velocity and pressure characteristic of the composite spinning micropore are researched with the software of CFD-Fluent.
Copet And Pet Spinning Melt Flow Simulation Based on Fluent According to the numerical analysis and calculation for melt flowing in the sheath-core orifices, velocity distribution is related with , and n.
The Fluent software simulation indicates: two kinds of melt bear the biggest pressure in the micropore entrance, then the pressure reduces gradually along the flow direction, and at the exit the pressure is the atmospheric pressure.

In this paper ,it describes the simulated annealing genetic algorithm ,and constructs the UMDH network model based on this algorithm, and the model is applied to the simulation of debris flow prediction research ,forecast average relative error reached 3. 54%.
Now GMDH network structure, SAGA-GMDH network structure on the debris flow out of a maximum amount of computer simulation.
Simulation predicted results, single-point relative error, the average relative error,Correlation coefficient, (N is the number of nodes prediction).
Prediction obtained by computer simulation results shown in Figure 3 and Figure 4.
Modeling and multi-objective optimization of cyclone separators using CFD and genetic algorithms[J].

Experimental Study and Numerical Simulation on Thermal Energy Storage Characteristics of Composite Phase Change Materials in Annular Space of Vertical Double-pipe Heat Exchanger LIU Xiaohong1, a, LING Ziye2, b, SUN Peng2, c, FANG Xiaoming2, d, XU Tao2, e, ZHANG Zhengguo2, f * 1Automotive Department, Guangdong Industry Technical College, Guangzhou 510300, China. 2Key Laboratory of Enhanced Heat Transfer and Energy Conservation, the Ministry of Education, South China University of Technology, Guangzhou 510640, China a1243360323@qq.com, bling.ziye@mail.scut.edu.cn, csun.peng@mail.scut.edu.cn, dcexmfang@scut.edu.cn, e xt771120@163.com, fcezhang68@163.com Key words: Composite phase change material, Thermal storage, Expanded graphite, Numerical simulation Abstract: Experimental system on thermal energy storage characteristics of phase change materials (PCMs) in annular space of a vertical double-pipe heat exchanger was set up.
The temperature fields of composite PCM in different time are obtained by numerical simulation method, the measured temperatures and simulation results are in good agreement.
Commercial Computational Fluid Dynamics (CFD) software FLUENT 5.6 is used to simulate the thermal storage process of composite PCMs.
Li, Experiment test of thermal conductivity coefficient and heat transfer simulation analysis of fatty acids phase change materials, Journal of Functional Materials, 43(2012) 1950-1954,1959