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The water flow pattern in WMFS was simulated by using CFD software, and the data were analyzed in theory.
Simulation of the Water Flow in the WMFS In simulation, the WMFS was simplified as following as Fig. 3(a).
(a) (b) (c) (d) (e) Fig. 3 The simulation of water flow at 0.0275m/s of the upward water velocity: (a) the model of WMFS in simulation; (b) contours of velocity magnitude (m/s); (c) velocity vectors of water flow; (d) contours of Static Pressure (Pascal); (e) contours of density (Kg/m3) Coal Slime Separation Test According to exploratory experiments and simulation, the upward water velocity was selected at 0.275 m/s.
Coefficient. (%) Wt(F) (%) Ash (%) Wt (%) Wt(F) (%) Ash (%) Wt (%) Wt(F) (%) Ash (%) -1.3 44.54 4.74 75.70 35.10 4.76 15.50 8.31 5.43 19.15 1.3-1.4 14.37 16.66 15.48 7.18 17.47 17.23 9.24 18.47 56.29 1.4-1.5 9.57 27.38 5.93 2.75 28.00 10.61 5.69 28.84 67.42 1.5-1.6 5.56 38.95 1.43 0.66 39.64 8.18 4.39 39.64 86.90 1.6-1.8 6.32 52.30 1.46 0.68 64.79 11.00 5.90 51.57 89.70 +1.8 19.64 81.26 0 0 0 37.47 20.10 81.26 100.00 Total 100.00 28.55 100.00 46.37 9.48 100.00 53.63 46.45 Conclusions With the fast growth of computer techniques and advances in Computational Fluid Dynamics (CFD), the direct simulation of multiple phase phenomena in a solid-liquid fluidized-bed becomes feasible.
By comparing the simulation results with laboratory experimental data, it was shown that the use of CFD methodology has favorable accuracy and efficiency.

The method is as follow, take three-dimensional steady numerical simulation on the whole fluid field; calculate water pressure on blade surface, and then load the water pressure onto the blade structure surface to calculate the equivalent stress and deformation distribution on the impeller; and finally analyze the strength of the impeller.
In this paper, the CFD software CFX and the finite element software ANSYS have been used to calculate the strength of a axial-flow pump impeller in a domestic pumping station.
Result and analysis of the simulation Four pump head conditions was selected under each blade angle to calculate the strength of the impeller.
Conclusion In this paper, CFD numerical simulation was used to calculated the surface water pressure on the blade, and the surface water pressure was loaded into the structure surface of the impeller using ANSYS software to calculate the strength of the pump impeller .Analysis showed that: (1) Under each condition, stress concentration occurs on the root of the blade, and the maximum equivalent stress occurs at the junction of the blade root and the hub which is prone to fatigue failure
Rigidity/strength analysis of the axial flow blades based on CFD [J].

CFD simulation technology can predict fan performance，and reduce the number of trials and sample programs, which provide the basis for fan design improvement.
This article focuses on the simulation of the aerodynamic performance of the fan, softwareFluent was adopted to establish CFD model of the axial fan aerodynamic performance.
The grid generated in ICEM CFD.
In the CFD calculation of fan simulation, the pressure value at Pe3 in Fig. 1 should be the pressure of inlet, which will weak the impact of rectifier grille and improve the accuracy of model.
(4) In the CFD calculation of fan simulation, the pressure value at Pe3 in Fig. 1 should be the pressure of inlet, which will weak the impact of rectifier grille and improve the accuracy of model.

The structure of half airtight cover is optimized by used of CFD, and the curve type is suitable shape to collect the dust.
The structure of collection cover is discussed, and optimized the structure of collection covers used by CFD.
Structure optimization of half airtight cover Two kinds of structure of half airtight are designed, which are straight line type and the curve type, compared their collection performance through CFD [6].
Through CFD computation, the collection performance of curve half airtight is better.
Li, in: Dynamics numerical simulation of cage-type bio-reactor, edited by R.

CFD Simulation on Flow distribution in plate-fin heat exchangers Zhe Zhanga, Jinjin Tian and Yonggang Guo Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, China 300134 axjtuzz@163.com Keywords: Plate-fin heat exchanger, flow distribution, header configuration Abstract: The influences of the conventional header configuration used in industry at present on the fluid flow distribution in plate-fin heat exchanger were numerically investigated.
Study of the flow maldistribution in a plate-fin heat exchanger CFD models A schematic view of conventional header is shown in Fig. 1, which has the geometrical characteristics listed as follows.
inlet tube header distributor Fig.1 Schematic drawing of the plate-fin heat exchanger (mm) In this work, CFD software FLUENT was employed to simulate the fluid flow distribution in the header of plate-fin heat exchanger.
It can be found from the above contrast that the tendency of the numerical simulation results and experimental results are the same and the error is little.

China, 110870 asccok1988@163.com, bliguodapple@sina.com, cji07619@126.com Keywords: Cold air supply, Air distribution, Numerical simulation.
With the development of computer technology, computational fluid dynamics (CFD) has been widely applied in various fields.
For hvac field, we can make use of the CFD method to numerical simulation of the air distribution of air conditioning room, recieving the temperature field distribution and velocity field distribution.
The Numerical Simulation Results.
Numerical simulation can well reflect the working area thermal environment, in order to design more reasonable, we could use numerical simulation analysis before the design.

Numerical Simulation on Flow Field of Screen Filter for Drip Irrigation in Field Q.L.
ZHeng 3, b 1College of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832000, China 2State Key Laboratory of Water Resources and Hydropower Engineering Science，Wuhan University，Wuhan 430072，China 3College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China aquanli1871@126.com,bztg_1983@163.com Keywords: drip irrigation in field, screen filter, flow field, numerical simulation Abstract.
Based on CFD software Fluent, the flow field of screen filter was simulated numerically, and the results of calculation were analyzed in detailed.
With the rapid development of computer numerical calculation, the simulation of complex flow phenomena has become reality, and the internal flow phenomena and flow structure have also been exposed.
Based on CFD software Fluent, the flow field of screen filter was simulated numerically.

A three dimensional fluid flow model was set up in this paper, based on the computational fluid dynamics (CFD) and the elasticity theory.
Aiming at the problem of low granules, numerical simulation can be realized by assuming water with little sand as pipe flow with solid granules.
The pipeline is simulated numerically by using CFD with uncoupled, implicitly, unsteady and 3D solver.
Simulation results and analysis The sand is affected by gravity in the vertical direction and drag force of the water in the horizontal direction.
From the simulation results can be roughly seen in the 120°bend, the degree and the acreage of erosion is much larger.

Numerical simulation provided reliable theoretical reference for further engineering research of heat exchanger with helical baffles.
In recent years, computational fluid dynamics (CFD) got great progress due to the rapid development of computer technology.
The CFD method can solve problems in a shorter time and lower cost compared with traditional experimental method so that greatly reducing the input of human and material resources and realizing parametric analysis.
The CFD software has now become a powerful tool to solve all kinds of problems about fluid flow and heat transfer, which was successfully applied to various fields of science and technology.
The effect of thermal boundary condition of tube surface on CFD results can be ignored.

China wangping010@163.com Keywords: Combustor, Primary combustion zone, Numerical simulation.
Method of CFD is used in this paper to simulate and calculate velocity field, temperature field and droplet track in PCZ(primary combustion zone) under the 3D two phase turbulent combustion for the ground idling, the peak, the middling and the altitude-small lever flying conditions.
Numerical simulation shortens the development cycle of the combustion chamber, saving development costs [1-4].
Figure 1 illustrates the shape of the combustion chamber for the simulation.
Reaction Kinetic Numerical Simulation of Combustion Process and Emission Formation in Aero-engine Combustor.