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One Based Magnetic Oxygen Carrier Solid Fuel Chemical Looping Combustion System Simulation WenYan Li1, a, MingZhong Gao2,b 1North China Electric Power University, Beijing, 102206, China aliweny@vip.sina.com, bgaomingzhong911@163.com Keywords: Chemical-looping combustion; Fe2O3; Fe3O4; CFD.
In this paper, Computational Fluid Dynamics (CFD) was used to simulate the magnetic device for the separation of Fe-base oxygen carrier in chemical-looping combustion system.
The simulation was based on the Euler multiphase flow model and the k-ε turbulence model, which uses UDF programming to increase volume source phase.
In recent year, the software Fluent that based on commercial computational fluid dynamics simulation has good effect.
Simulation the trajectory of the particles of the magnetic substance in the magnetic force with UDF add source phase.

Exploring the Effect of Length and Angle on NACA 0010 for Diffuser Design in Tidal Current Turbines Nasir Mehmooda, Zhang Liangb and Jawad Khanc College of Ship Building Engineering, Harbin Engineering University, Harbin, Heilongjiang, China athatsnasir@live.com, bzhangliang@hrbeu.edu.cn, cjawadkhan2008@hotmail.com Keywords: Diffuser augmented tidal turbine; Ducted turbine; Shrouded turbine; Numerical simulation of diffuser; CFD simulation of diffuser Abstract.
Numerical simulation of velocity profile at the throat is presented in detail.
This research serves as foundation for using CFD tools for diffuser design for tidal current turbines.
The simulation is carried out using commercially available software Ansys CFX.
Liang: CFD Study of 2D Model of Diffuser for Harnessing Tidal Energy, Advanced Materials Research Vol. 482-484, p. 2270-2274.

To overcome this difficulty and predict the average pressure that the inner faces of the truncated cone, CFD techniques were used to simulate the same industrial conditions of hydrocyclones H23 and H24.
From the velocity and pressure profiles obtained by CFD techniques, it was numerically calculated mean pressures that internal walls were submitted (Eq. 4).
From the velocity and pressure profiles obtained by CFD techniques, it was numerically calculated mean pressures that internal walls were submitted (Eq. 4).
For registration purposes, the CFD simulations in hydrocyclones were two-dimensional, permanent and axis of symmetry.
RESULTS E DISCUSS Preliminarily, CFD simulations were performed in a condition commonly seen operating industrial hydrocyclones for H23 and H24 (−ΔPOA=257881 Pa and −ΔPOA=275351 Pa, respectively).

3D Numerical Simulation of Inner water Flow Field in A Hydrocyclone with Air Column Hui Li1,a, Xiaojun Guo1,b 1Huang He Science and Technology College, Zhengzhou, Henan, 450063, China a feng_109_1@163.com, b dmsxin@163.com Keywords: hydrocyclone, FLUENT, air column, numerical simulation, “mixture”model.
Based on the principle and method of computational fluid dynamics (CFD), using the software, FLUENT, the inner water flow field in a hydrocyclone with air column was simulated and the flow details were studied roundly.
So, as the base of further studying the solid - liquid separation , the inner water flow field in a hydrocyclone with air column was simulated based on the principle and method of computational fluid dynamics (CFD), using the software, FLUENT.
According to this point, the author’s work started with the simulation of water flow field.
In this paper, the distribution of tangential velocity is given by the method of numerical simulation, as shown in Figure5.

This paper used different rotational speeds of the rotor and outlet pressure for the simulation of twin screw pump to predict the internal flow.
The model consists of 194655 two-dimensional grids and 1325919 three-dimensional grids with the maximum skewness of 0.88993, and FLUENT was used for the CFD solver.
References [1] M. van Beijnum, “CFD simulations of multiphase twin screw pump”, MSc Report, University of Eindhoven, Report No.WPC 2007.08, August 2007, Netherland
Wang, “CFD Numerical Simulation and Experimental Study of Effects of Screw-Sleeve Fitting Clearance upon Triangular Thread Labyrinth Screw Pump (LSP) Performance,” Journal of Applied Fluid Mechanics, Vol. 3, No. 1, pp. 75-81, 2010
[5] Wu Yulin, et al, “Numerical Simulation on the Steady and Unsteady Internal Flows of a Centrifugal Pump” Tsinghua University, China

Today, with increasing maturity of CFD technique and computing power, one focus in numerical simulation of combustion is in the area of non-equilibrium chemistry and multiphase flow.
Therefore, CFD codes can serve as a powerful tool used to perform low cost parametric studies.
Geometry and Mesh Generation Grid generation represents a major challenge for CFD analysis.
The final unstructured grid that had 50000 cells was used in the simulation.
The ranges of the simulation values are: 10000W Q =& , 1.0 0.7, ,5.0=φ and 30% 20%, %,10=γ .

Ouellet et al.[2] validated the numerical simulation for isothermal and non-isothermal conditions through numerical simulation and experimental work.
Ajersch et al.[4] studied the spatial distribution of velocity, temperature and compositional variation in the pot by CFD technique.
In this paper, CFD technique has been used to study the effect of three different zinc pot designs on flow and temperature distribution.
All simulation were carried out under steady-state condition.
Fig. 8 Velocity for the three cases in z direction at height of 2450mm on the z-x plane (y=850mm) through the inlet Conclusions Numerical simulations of the temperature and velocity distribution in a typical zinc pot have been carried out by using a CFD technique.

For an axial flow maglev blood pump, based on CFD, using k-ε model, unstructured mesh, establishing the whole flow channel model, a three-dimensional numerical simulation of axial flow maglev blood pump was carried.
Simulation results show that: the port clearance ratio δ=0.75, the flow channel gap h = 2.5mm, blade height b = 1.8mm, the optimal performance was attained.
Three-dimensional numerical analysis was performed by commercial CFD software ANSYS FLUENT.
(3) Though analyzing CFD results, the structure of blood pump was designed.
Numerical simulation and comparative analysis of flow field in axial blood pumps.

Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, mesh, load applying and equation solving.
In this paper, we use the FLOTRAN CFD analysis of ANSYS software to establish two-dimensional according to the actual size of fluidic gyroscope.
Fig. 3 Two-dimensional simplified models of sensitive cavity Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tools used to study two dimensional and three dimensional flow fields, the simulation typically comprises modeling, loading and solving [3-4].
Select FLOTRAN CFD analysis of ANSYS software.
Wang: Numerical simulation of practical engineering in ANSYS (Northwestern Polytechnical University Press, China 1999)

The simulation result showed that the distributions of droplet nuclei and CO2 which were simulated by CFD were similar under the same ward airflow.
CFD was usually used to simulate the distribution of the droplet nuclei to analysis the pollution discharge effectiveness of indoor ventilation.
But the numerical simulation results were difficult to test because the discharge and detection of particle were difficult.
Tracer gas always had been used to replace the particle to be released to test the numerical simulation results of indoor airflow.
III.Simulation Results Using the steady state simulation, the velocity field and particle, CO2 concentration distribution in the ward after the convergence were as follows: The horizontal plane y = 0.4 (0.4m higher from the ground) through the exhaust outlet was located under the bed.