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Study on the operation characteristics of Electrostatic Fabric Precipitator Chaofan Sun1,a, Xinglu Yu2,b, Xinfeng Long2,c, Bo Lou 2,d，Debo Li1 1 Electric Power Research Institute of Guangdong Power Grid Corporation, CSG, Guangzhou, 510080, China 2 Room405A, Building 16, South China University of Technology, Guangzhou, 510640 China asun-cf@163.com, ayuxinglu66@163.com, ccexflong@scut.edu.cn, dloubo@scut.edu.cn, Keywords: numerical simulation; DPM; airflow distribution; CFD Abstract.
Numerical simulation method was used in this paper and 3-D structure of model was established with Pro/Engineering.
And numerical simulation method was used in order to study the characteristics of electrostatic fabric precipitator.
Numerical Model In this simulation, a segregated solver was used and the k-ε model was chosen.
The numerical simulation method was used in the calculation of electrostatic fabric precipitator.

Simulation results show that the performance of oil lubricated screw pair is the best at the radial clearance of 0.10 mm.
Application of CFD analysis for rotating machinery-Part I: hydrodynamic, hydrostatic bearings and squeeze film damper [J].
CFD analysis of journal bearing hydrodynamic lubrication by Bingham lubricant [J].Tribology International, 2008(41):1190-1204
[6] J.J.Wang, P.F.Zhang, L.X.Huang, Numerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers [J].
Numerical simulation study on water-lubricated hydrostatic journal bearings [J].

Numerical simulation was designed based on the study of the theory.
Values of the surface shear velocities and other simulations data are summarized in Table1.
Note that the CFD time step was much larger than the DEM time step to reduce the computational time.
Study on Piping by Sand-bank Model And simulation by PFC3D [J].
Saturated-unsaturated unsteady seepage flow numerical simulation[J].

Numerical Simulation of Mold Filling and Solidification Process for Beam Blank Continuous Casting Yanjuan Jin1, a, Xiaochao Cui1, b and Zhu Zhang1, c 1School of Applied Science, Taiyuan University of Science and Technology, Waliu Road 66, China 030024 ajinyanjuan2003@163.com, bcuixiaochao@sohu.com, czhangzhu030168@163.com Keywords: Beam blank continuous casting, Mold filling, Solidification, Velocity field, Temperature field, Numerical simulation Abstract.
Mold filling and solidification of molten steel for 750mm×450mm×300mm continuous casting mold of single SEN and double SEN are simulated by using CFD commercial code Flow-3d.
Lou[2], 3-D numerical simulation on flowing distribution in mould for beam blank continuous casting of J.W.
YANG[3], 3-D numerical simulation on flow of molten steel in mould during beam blank continuous casting of Y.P.
Numerical Simulation Assumed Conditions.

Firstly, Computational Fluid Dynamic (CFD) method which is based on solving the three-dimensional compressible Navier-Stokes (N-S) equations is employed to perform aerodynamic heating analysis.
Firstly, based on the structural model and aerodynamic model, a CFD-based aerodynamic heating calculation is carried out, from which we can get surface thermal fluxes that will be the input of the next step; Secondly, transient heat conduction analysis follows, in which thermal characteristics of materials are taken into account; Thirdly, based on the temperature field of structure, structural thermal analysis is performed, in which the thermal characteristics of materials like elastic modulus and thermal expansion coefficient is also considered; Finally, based on the new stiffness distribution obtained in the previous step, a structural dynamic analysis is carried out.
The aerodynamic heating model of CFD-based is shown in Fig.3.
In addition, the point-to-point multi-block structured grids are employed in the simulation, and the zero-order interpolation is adopted at the boundary.

In this paper, CFD method is adopted and VOF calculating model is established and turbulent kinetic energy and turbulent dissipation rate are introduced as standard to analyse energy dissipation mechanics of the facility.
Numerical simulation will be adopted to analyse this facility in the paper.
Simulating the stream having free surface is always difficult problem in CFD, it is due to that the figure of free surface is not regular geometry surface and the figure and position, which are related to its boundary condition, are unknown before calculating.
Standard model, which is of Fluent software in CFD, is used to deal with turbulent flow problem[3].

NOx and Soot Emissions Numerical Simulation of Diesel Engine Fueled with Biodiesel Jianlin Ge1,a, Dong Tang2,b, Huan Chen3,c, Shengji Liu4,d 1,2,3,4School of Automobile, Jiangsu University, Zhen Jiang 212013, China agjl465893@qq.com, bdtang@ujs.edu.cn, c371045690@qq.com,dliushengji@126.com Key words: Non-road diesel; Bio-diesel; Emission; Numerical Simulation Abstract: The three dimensional numerical simulation on NOx and soot emissions was carried out on 186 FA diesel engine fueled with pure diesel and B20 fuel using CFD software Fire v2008 and the generating rule and distribution of NOx and soot of two fuel was described.
There has been a lot of research on bio-diesel at home and abroad, mainly in the aspect of bio-diesel combustion and spray characteristics[1-3], but it’s less in research on multi-dimensional numerical simulation of bio-diesel engine blends.
In this paper, it was carried out on small biodiesel blended using AVL's FIRE software with diesel combustion process simulation and numerical analysis of their emissions, improving emissions and verifying it according to the conclusions.
Mesh Set up and Calculation Model Use air-cooled diesel engine 186FA-type prototype for the simulation, the main technical parameters in Table 1.
The tests show that Bosch smoke opacity of B0 fuel and B20 fuel is 1.6 and 1.9 respectively, at full speed and full load, and the results are the same as the simulation predicted results.

The author analyzed the deformation characteristics and the closed configuration of the self-supporting cracks in complex stress state through numerical simulation method, established a self-supporting crack wall combination indoor preparation methods and conductivity test methods, and finally established water fracturing reservoir screening methods on the basis of dimensionless conductivity.
(2) In which, Cfd is dimensionless fracture conductivity; Kf is formation permeability, μm2; K is formation fracture permeability, μm2; Lf is fracture length, m; Wf is fracture width, m.
Considering the effect of fracture pollution, optimized Cfd is 1.26.
Table 1 Dimensionless conductivity Cfd Well number Depth (m) Young's modulus (MPa) Core permeability (10-3μm2) Effective closure pressure (MPa) Fracture length (m) Flow capacity (μm2-cm) If appropriate gu708 2161 5453 0.18 30 160 20.68 7.18 yes chao103 984 4546 0.26 16 120 14.82 4.75 yes xing11 1112 4701 21.25 15 28 7.21 0.12 no yuan264 1647 7140 0.085 23 160 26.62 19.57 yes Table 2 shows, high elastic modulus, low permeability reservoir as gu708, chao103 and yuan264 are suitable for water fracturing.

Fig4 The model after mashing Fig.5 The model after loading 3.Finite element method ANSYS－FLOTRAN CFD is an advanced tool used to analyze the two and three dimensional flowing fields[3] .
It usually includes three steps as follows: model building, loads applying and equation solving. 3.1model building (1) Analysis type choice:Choose the analysis function of ANSYS－FLOTRAN CFD
Fig.7 shows the relationship between acceleration and the bridge output when angle=15.In short, in a small acceleration, the angle between thermistor connection and the x-axis is 45 ° we can get the best output. 0° 15° 30° 45° 0g 0 0 0 0 0.5g 11.1 11.7 14.2 26.4 g 21.9 27.5 56.4 108.5 Table.2 The difference between two thermistors 0.0 0.5 1.0 1.5 2.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 ΔV/(v) a/(g) B Fig.7 The relationship between acceleration and the bridge output when angle=15° 角 度 a 夹 角 T2 T1 a 6.Conclusions Using the finite element method and ANSYS－FLOTRAN CFD program, the temperature field is calculated in different accelerations and different angles.The calculation results and analysis results show: If not beyond the measurement range, The more close to the heat flow center,the greater temperature difference between the two hot-resistances,and the greater output of voltage.
[2] Guoqiang Wang, Numerical simulation and practice on ANSYS [M], Xi'an: Northwest Industry University Press, 1999. 221

An unidirectional (one way) analysis is performed by running a CFD analysis, extracting the forces acting on a solid surface and then importing them to a structural analysis.
In an unidirectional analysis the response from the structural analysis will not affect the CFD analysis.
In a bidirectional (two-way) analysis the structural response will be taken into account and affect the flow simulation.
After analysis in CFX resultant pressure distribution as shown in Fig 2b. 100 MPa 180 m/s Figure 2a: Loads and boundary conditions Figure 2b: Imported pressure distribution for fluid domain into structural analysis from CFX analysis Figure 2c: Boundary conditions on structural analysis (Solid domain) Verification and Validation: To verify the solution from the CFD analysis a mesh independence analysis was performed.