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The CFD simulation results suggest that the presence of spacers causes velocity fluctuation, high shear stress and high pressure drop.
In this paper, a two-dimensional CFD simulation for spacer filled membrane channel was conducted.
As it is shown in Fig. 2, the analytical results are compared with those from CFD simulations.
In order to study the effect of spacers’ location, a CFD simulation of channels filled with two spacers were conducted.
The CFD simulation also indicates that spacer of new shape gives significant reduction in pressure drop while the shear stress retains a comparable value.

Results and Analysis The result of CFD simulations for pressure distributions at the design 20º pitch angle are showed in Fig. 2.
The results of the CFD simulation are compared with the results of a set of experimental tests for MCT model at a designed blade pitch angles 20° as shown in Fig. 3.
For TSR > 6 both simulations tend to over predict the power coefficients.
Summary A comparison with the experimental results and other simulation results shows the applicability of using CFD as the tools to predict the hydrodynamic performance of horizontal axis MCT.
The agreement between all experiments and predictions was demonstrated for the design case at blade pitch angle 20º.The accuracy of the predictions is satisfactory for using the CFD simulation techniques to design the MCT.

The Stirring and Heating CFD Simulation Strategic Research on Food Waste Biological Treatment Processor Deyu Song1, a, Song Lin2,b 1Department of Mechanical and Electrical Engineering, North China University of Technology, Beijing, 100144, China asongdeyu123@163.com, blinsong2000@126.com Keywords: Stirring, Heating, Heat pipe, Simulation, CFD, MRF.
In recent years, with the development of CFD（Computational Fluid Dynamics）, the flow field simulation technology as an effective research method, provide an important guidance for the inner simulation of flow and temperature field on a certain extent.
In 2000, Jaworski etc. [5] used CFD make an inside mixing process simulation of one double Layer six vertical blade turbine stirring tank.
By referencing the CFD method goes on with the established model’s inside temperature simulation analysis.
Simulation model and method Fluent is one of the CFD soft wares that currently in the leading position in the world, which is specialized CFD software used for the simulation and analysis of fluid flow and heat exchange problem in the complex geometry area.

And we reuse software ANSYS FLUENT to make simulation analysis of the negative pressure chamber for flow field .
So in this paper, we make a flow field simulation to gas suction drum precision seeding mechanism’s negative pressure chamber through using CFD (Computational Fluid Dynamics) technology. 1.
The simulation analysis of negative pressure chamber air flow field which is based on the CFD technology Using the CFD technology, we solve the simulation of aspiration drum precision seeding mechanism’s negative pressure chamber air flow field can be divided into three steps: pretreatment (ICEM CFD), solving (ANSYS FLUENT), the post-processing (ANSYS FLUENT). 4.1 Pretreatment (ICEM CFD modeling and mesh division) By using the interface of CATIA software, the ICEM CFD software will leading in seeding mechanism geometric model.
So far ,the flow field’s simulation of gas aspiration drum precision seeding mechanism’s negative pressure chamber by using CFD technology is feasible.
References [1] Li Pengfei, Xu Minyi，Wang Feifei：Proficient in CFD Simulation and actual cases.Press of People’s Posts and Telecommunication，2011

In this sense, a water eductor system is studied, by carrying out a preliminary experimental program, for use in abrasive waterjet installations collector tanks, by CFD simulation process.
CFD simulation of fluid flow through eductor nozzle Following the simulation, the results obtained are: the maximum velocity is reached before the exit of the nozzle being the smallest diameter section and at the exit of the fluid nozzle the maximum velocity reached is 240 m/s which is enough to cover the 1200 mm tank width.
Figure 6 shows the CFD simulation for configuration 1.
Figure 7 shows the CFD simulation for configuration 2.
Meneghini, Performance analysis of a water ejector using Computational Fluid Dynamics (CFD) simulations and mathematical modeling, Energy 220 (2021) 119779 [4] Lee MS, Lee H, Hwang Y, Radermacher R, Jeong HM.

Keywords: Vertical air conditioner; CFD; Temperature Distribution; Simulation; Air Flow Distribution Abstract.
(3) The results of simulation were reasonable and close to practical, which showed CFD was a suitable tool to apply into the field of air condition and ventilation engineering.
Theoretical study and CFD simulation of airflow distribution through a cold store [J].
Application of computational fluid dynamics (CFD) used in simulation of cold store[J].
CFD simulation of effects of operating parameters and product on heat transfer and moisture loss in the stack of bagged potatoes[J].

CFD Simulation of a Simplified Automotive Model for Various Rear Slant Angle S.Mansor1, a, N.A.R.
ashuhaimi@mail.fkm.utm.my, bridhwan@fkm.utm.my, cwcchan2@live.utm.my Keywords: CFD simulations, Davis model, Vehicle aerodynamics Abstract.
Thus, CFD simulation plays an important role here.
So that, the CFD modeling method utilized here should be verified before conduct the simulation.
Hence, k- ω SST turbulence model has been chosen for all CFD simulation in this paper.

Computational Fluid Dynamics (CFD) simulations can be valuable alternative to measurements and semi-empirical methods.
CFD simulations are made for a limited number of horizontal rainfall intensity and wind velocity couples.
Kubilay et al., CFD simulation and validation of wind-driven rain on a building facade with an Eulerian multiphase model.
The cost 732 best practice guideline for CFD simulation of flows in the urban environment: a summary.
Blocken et al., CFD simulation of the atmospheric boundary layer: - wall function problem.

Study on Dynamic Characteristics of DC Valve in Electro-Hydraulic System Using CFD Simulation Aphaiwong Junchangpood Department of Teacher Training in Mechanical Engineering, King Mongkut’s University of Technology North Bangkok, Thailand aphaiwongj@kmutnb.ac.th Keywords: Dynamic Characteristics; CFD Simulation; Electro-Hydraulic Systems.
Hence, in this paper, the dynamic characteristics of the directional control valve are defined by CFD simulation, and the flow behaviors are also demonstrated.
Numerical Analysis Using CFD Simulation For solving the problem of flow through the valve, the numerical analysis with the computational fluid dynamics (CFD) is employed.
Figure 1 3D Computational domain for CFD.
The flow has been simulated in a 3D computational domain using the CFD simulation, based on turbulence models and dissipative numerical methods, as the Reynolds Averaged Navier– Stokes (RANS) approaches.

Owing to these factors, researchers begin to study tray hydraulics by CFD simulation.
Development of CFD Model 1.
Fig.1 The grid map and boundaries of CFD simulation Simulation and Discussion The calculation is carried out using FLUENT.
Fig.2 Comparison of experimental clear liquid height with results of CFD simulations Fig.2 shows the alternation of clear liquid height when QL/W=8.25×10-3m3/(s·m).
This study has shown that CFD can be used as a powerful tool in designing and simulation of dividing wall trays.