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In this paper,CFD was applied to analyze the Impacts of screw speed on all-metal screw pump. 1 The Establishment of All-metal Single Screw Pump's FEM 1.1 Creating Geometric Model The model number GLB160-10 screw pump was taken for example in this paper.
But the well daily oil production is changing, now the screw speed is choosing according to two method as follows, one is IPR curve, the other one is regular annular measurement or the pressure signal measurement of the well bottom which can measure the liquid level accurately[6,7]. 3 The Result of Simulation under Different Screw Speed Contour graphs of pressure differential between every stage is shown in Fig.4.

The effects of bionic wavy surface on the aerodynamic and aeroacoustic performance of the cylinder are investigated by wind tunnel and numerical simulation.
We used the software ANSYS FLUENT to research the effect of the bionic wavy surface on the aerodynamic characteristics and aerodynamic noise of a cylinder by the Large Eddy Simulation(LES) and the Ffowcs Williams and Hawkings (FW-H) equation.
Fig.4 Boundary conditions 3 Comparison of simulation results 3.1 The SPL (sound pressure level) comparison of the cylinders The SPL comparison spectrum at the noise monitoring points of smooth cylinder and wavy surface cylinder is depicted in Fig.5.
According to the numerical simulation results, the total sound pressure level(SPL) of bionic wavy cylinder model is reduced by 6.7dB compared with smooth cylinder model at uniform velocity of 42m/s. 3.
According to the results of numerical simulation, bionic wavy structure can reduce the frequency of vortex shedding on cylindrical surface, so the fluctuating pressure should be lowered correspondingly, and thus the aerodynamic noise is lowered.

A simulation model is developed to predict removal rates by MATLAB/Simulink.
The simulation system is shown in Fig. 9.
Fig. 9 Simulation system of swing device.
Table 2 Simulation parameters of swing device.
Multiphase flow and nozzle wear with CFD-DEM in high-pressure abrasive water jet[J].

A step further would be to use Computational Fluid Dynamics (CFD) to simulate the compression but this would need to be an iterative process because the CFD, in itself, requires the assumption of a rheology model and the input of parameters.
Transient Behaviour Computational Fluid Dynamics (CFD) has been extensively used to predict die filling (see eg. [2]).
Kumar et al [25] and Koke and Modigell [9] however, find shear thickening 'iso-structural' flow behaviour and the latter authors argue that this finding is of high importance for simulation of the industrial process.

It is therefore significant to visualize the filling process by using a simulation approach.
Experimental Study and Numerical Simulation on the Blistering Defect during Thixocasting.
Fig. 1 Schematic drawing of the computational part and corresponding monitored locations during simulation. 2.2 Numerical procedure In the present work, commercial CFD software FLUENT (version 16.2) has been used to develop a three-dimensional isothermal numerical model of semi-solid die filling process using Eulerian multiphase flow approach.
Fig. 3 shows the quantitative solid fraction along line (A-B) and simulation results for comparison.
Comparing with one-phase simulation, it is reasonable to conclude that multiphase simulation of semi-solid die casting has significant advantages in modelling gas entrapment.

Mathematical models Along with the rapid expanding of CFD commercial software, numerical simulation speeds up for more vivid comprehension of the mechanism.
Calculation subprograms of numerical simulations on the density, film thickness, isobaric specific heat capacity and viscosity are conducted.
The simulation results predict that the average concentration of once film-inverse scheme is slightly lower than that of the once mixing uniform scheme.
Numerical Simulation of Characteristics of Falling Film Absorption on Vertical Corrugation Plates for Aqueous Li-Br Solution.
Numerical simulation of heat and mass transfer enhancement in absorption process with double-side film-inversion.

The kinetic parameters of the pyrolysis process, such as activation energy and pre-exponential factor, were calculated by least squares non-linear method and Scilab are used as the simulation tool.
This work about pyrolysis kinetics is a fundamental study which will be used to our CFD and experimental works about equipments like spouted and fluidized bed [19-21], that will be applied to fast pyrolysis.
Scilab software was used as the simulation tool

Three dimensional simulation using ANSYS Fluent have been conducted for six different configurations at Reynolds number ranging from 200 to 1000 based on louver pitch.
In this study, numerical method using commercial CFD code ANSYS 14.0 is employed for various geometrical parameters in order to determine the pressure drop and heat transfer rate of louvered fin heat exchanger.
The numerical work involved 3-dimensional, steady simulation of air enters across the heat exchanger.

It has revisable source code and is widely used in fire scenario simulation of buildings.
It is directly related with the simulation accuracy and the fire fighting and rescue plan for emergency according to the simulation.
The peak temperature of T7 is higher than that of other points in the simulation with the same parameters.
Compared with the results of simulation without ventilation, the temperature difference between detecting points along tunnel ceiling in simulation of U = ﹣2.7 m/s diminishes obviously.
Model Experimental and CFD Simulation Research on Road Tunnel Fire.

The typical values for the component efficiencies that are usually used in the calculation is being listed as below: · ηt = 0.45 for the turbine efficiency · ηd = 0.96 for drive – train efficiency · ηg = 0.95 for generator efficiency · ηc = 0.98 for the efficiency of the power conditioning component. [9] Figure 3: Potential power generation (kW) Figure 4: Potential power generation (kW) at Pulau Langkawi at Pulau Pinang Figure 5: Potential power generation (kW) at Lumut Figure 6: Potential power generation (kW) at Pelabuhan Klang Figure 7: Potential power generation (kW) at Tg Keling Figure 8: Potential power generation (kW) at Kukup Figure 9: Potential power generation (kW) at Johor Bahru From the simulation result, it shows that the location for the highest potential power generation is at Pelabuhan Klang which is 748.407kW in January with the sweep area of turbine is 1m2.
From the simulation result, it also shows that the lowest potential power generation is at Tanjung Keling with 43.85Kw in February by assuming the sweep area of turbine is 1m2.
Simulation Studies on the Electrical Power Potential Harnessed by Tidal Current Turbines. 
Effects of CFD parameter variation on tidal energy resource assessment