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CFD simulation of flow characteristics in liquid-liquid ejectors Yan Zhang1, a, Yangdong Hu1, b and Lianying Wu1, c 1College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong, 266100, China aouczhangy@126.com, bydhuhd@ouc.edu.cn, cwulianying@ouc.edu.cn Keywords: liquid-liquid ejector, flow field distribution, turbulent dissipation rate, CFD simulation.
CFD modeling Ejector consists of the nozzle, the suction section, the mixing section and the diffuser.
In the simulation, boundary conditions of the working and secondary flow inlets are set as “velocity- inlet” condition.
The appropriate angle is about 24° after further simulation.
Conclusions In this paper, a CFD simulation is developed to study the hydrodynamic characteristics of ejectors with CFD software Fluent 6.3.

In the past decades, little research was carried on about the APR, especially the simulation studies.
In the present simulation, the shear-stress transport (SST) - turbulence model is usually adopted as the turbulence model.
Calculations with different mesh distributions and quantities are carried out to demonstrate that the simulation results are grid independent.
Another reason is that, as known to all, there exists variance in the CFD simulation.
A few conclusions can be drawn based on the simulation results and shown as follows: 1.

CFD(Computational Fluid Dynamics) results of LHA ship were verified the accuracy of numerical simulation through compared with the experimental data.
Recently, with the development of more advanced CFD methods and increased computing power, numerical simulations and capabilities have dramatically improved.
The time-accurate computational simulations of an LHA ship airwake was carried out[1] and the LHA CFD simulations show good agreement with the results of wind tunnel test.
Method of CFD Method of CFD The grid in this paper was generated by ANSYS ICEM.
CFD grid generation, as the first part of the simulation process, also will be increasingly difficult.

CFD simulation of Gas Distributor with Two Chambers Dongfang Zhao1, a and Fengguo Liu 1, b 1School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin 300384, China azdf_tj@163.com, blfg_tj@126.com Keywords: CFD, RNG k-ε turbulence model, Uniformity, gas distributor.
This paper investigated a new type of gas distributor with two chambers by CFD software.
The simulation results will provide a number of useful suggestions and references for the further design.
Summary The CFD program used was CFD-14.5.
Joshi, Design of a gas distributor: Three-dimensional CFD simulation of a coupled system consisting of a gas chamber and a bubble column, Chem.

The Simulation and Optimization on Flow Field in Intake Port of Engine Based on RE and CFD Dan HAN1, Qian WANG1 ,Binghuan Li1,Guojun ZHANG2,Shuo WANG2 1School of Energy Resources and Power Engineering, Jiangsu University, Zhenjiang 212013,China 2Research Center of Fluid Machinery and Engineering, Jiangsu University, Zhenjiang 212013 qwang@ujs.edu.cn Keywords: Gasoline engine, Intake port, CFD numerical simulation, Discharge coefficient.
In this paper, three-dimensional CFD calculation and structural optimization were used to research the performance of gasoline engine.
The results of the simulation of flow field characteristics analysis show that the simulation and experimental results are in good agreement.
As can be seen from fig.7, the discharge coefficient obtained by simulation and experiment are consistent, but the discharge coefficient obtained by simulation is slightly less than the experiment.
CFD simulation results were analyzed to evaluate the intake system, and an improved scheme is put forward.

Study on Influence of Geometric Parameters on DMFC Performance Based on Experiments and CFD Simulations Biao Yua, Han Zhaob School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, Anhui, China 230009 ayubiao619@gmail.com, bhanzhao@mail.hf.ah.cn Keywords: Direct methanol fuel cell (DMFC), Geometric parameters, Computational fluid dynamics (CFD) Abstract.
Experimental Tests and CFD Modeling Experimental Setup.
CFD Modeling.
CFD Simulation Results and Discussions Increasing of pressure inside the DMFC can improve the performance and the reason is that the high pressure can improve the mass transfer efficiency of fuel and oxygen, and high pressure also can improve the removal of CO2 and water which are generated by the electrochemical reactions.
Conclusions In this research, experimental study and CFD simulation are employed to investigate the influence of geometric parameters on DMFC performance.

CFD Simulation of Heat Transfer of Pulsating Gas in a Pipe Zhiren Yin1, a, Lijun Yang1, b, Runze Duan1, c 1School of Astronautics, Beihang University, Beijing, 100191, P.R.
China ayinzhr@gmail.com, byanglijun@buaa.edu.cn, cdhbdrz2@163.com Keywords: heat transfer, pulsating gas, CFD simulation Abstract.
Numerical Simulation of pulsating flow in a pulse combustor tailpipe was performed using computational fluid dynamics (CFD) method.
To get a better understanding, numerical simulation is a good choice.
The simulation was carried out using Fluent 6.3.

The study involves developing a 2D CFD model of diffuser, acquiring simulation results and comparison with experimental results.
The mesh is generated in ICEM followed by simulation in CFX.
The paper presents CFD simulation of 2D model of diffuser simulating the velocity profile along the center line of the model.
Norimasa two-way straight type model without flange, without brim, is selected for CFD simulation in this study.
CFD simulation of 2D model of diffuser is carried out.

Air Flow in Large Space Building with CFD Model and Local Test Wang Jun, Wang Haixia Henan University of Technology, Zhengzhou, Henan, China, 450052 Keywords: large space building, air distribution， thermal comfort, CFD simulation, local test Abstract.
Simulation with CFD and local test are two main methods in study on air flow in large space building.
In the simulation computation, k-ε dual equation model is adopted and CFD software for AIRPAK applied.
CFD simulation research under design conditions The establishment of the model remains basically the same with that of the above stated model.
The agreement of tested data and simulation computation results testifies accuracy of applying CFD software of AIRPAK in simulation of large space buildings

CFD Simulation Approach for Semisubmersible Response in Waves Based on Advanced Techniques Ionuț Cristian SCURTU “Mircea cel Batran” Naval Academy, Constanta, Romania ionut.scurtu@anmb.ro Keywords: Semisubmersible, Response function in waves, CFD software, UDF functions Abstract.
Simulations presented are done in CFX and Fluent, Ansys modules, with same initial conditions and same data analysis in CFD-post.
Results from CFX numerical investigation In this step, we use ANSYS CFD-Post to view the results of the three column semisubmersible simulation.
CFX simulation results are opened with CFD-post in order to extract results according to each time step.
Solver solution variation in CFX for torque and force monitor Results from Fluent numerical investigation The Fluent simulation results can be opened for analysis with the same CFD-post in order to easily compare with CFX results.