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Quantitative Analysis of Gas Flow in a Planar SOFC Kai Wang1, a, *Yisheng Zhang1,b and Jian Li1,c 1 State Key Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China awangkai1012@live.cn, bzhangys@mail.hust.edu.cn, clijian@hust.edu.cn Keywords: planar SOFC; CFD; gas flow; numerical simulation; quantitative analysis Abstract: Computational Fluid Dynamics (CFD) method was adopted to establish the three dimensional model for cathode gas channel of planar SOFC and simulate the gas flow in the channel of a single cell.
Valery et al [5] describe a 3-D CFD model of the anode gas channel in a planar SOFC with internal reforming.
Results and Discussion Simulation Results.
Numerical simulation was performed based on the model of the cathode gas channel of the planar single cell.
Fig.5 shows the velocity distribution diagram obtained by simulation of gas leak.

The simulation of the three dimensional vessel with interceptor is also included, and the effect is discussed.
Fig.2 Experimental ship model Simulation of the 3 dimensional ship without interceptor The ship’ length, width and draught are 65, 8.3 and 2.7 meters.
Conclusion The CFD code FLUENT is used in this paper, and the resistance of the ship with and without interceptor are calculated.
The numerical result is compared with the experimental data, and the comparison indicates the validity and reliability of the CFD code used for the simulation of the viscous flow field.
Hydrodynamics analysis of interceptors with CFD methods[C].

To model the particle motion in a computational fluid dynamics (CFD) simulation of the semi-solid forming process of this type of materials, a Lagrangian multiphase approach combining CFD and discrete element method (DEM) was used.
The simulations were performed for a symmetric disc geometry.
In the end, the study shows that by using four-way CFD-DEM coupling, simulation predictability for the semi-solid forming process of AMC could be significantly improved.
This equals particles ten times smaller than in the simulations.
As a result, the EModule was reduced to 100 MPa in the simulations.

Numerical Study on the Flow Structure of a Steam-jet Vacuum Pump at Different Throat Length Dai Xiao- Chun Liaoning University Of Technology, Liaoning Jinzhou 121001, China emai: dxiaoch@163.com Keywords: steam-jet pump, flow structure, throat length, CFD simulation Abstract.
The aim of the study is to reveal the complication of the flow process of a steam-jet by using the simulation software package (FLUENT).
Steam-jet pump model In this study, CFD was used to analyze the flow phenomena inside a steam-jet pump.
The CFD simulation was used to visualize the change in the flow structure and mixing process inside the steam-jet vacuum pump as influenced by throat length.
(2) where: : including the effect of body force and energy source : density , , : velocity component : energy of flow rate : pressure : stress tensor : heat-source CFD model and Numerical Simulations According to others researches, the CFD method was a good research tool to investigate and predict the complicated flow in a steam-jet vacuum pump [4-6].

Fig. 1 Structure of powertrain compartment Fig. 2 Three-dimensional CFD model A three-dimensional entity CFD model is designed in accordance with the size of the powertrain compartment.
The three-dimensional entity model of the CFD calculation area is shown as Figure 2.
As shown in Table 1, the error range is from 3.70%~ 5.17 %, and it proves that the simulation results are credible.
Study on simulation of the air flow in tank engine compartment [J].
Evaluation of cooling air duct comprehensive performance in vehicle based on CFD analysis[J].

In this study, a numerical approach based on computational fluid dynamics (CFD) was performed to describe the flow field.
Computational Fluid Dynamics (CFD) is a versatile method to predict velocity profiles under a wide range of operating conditions [2-4].
For the flow simulation in the cyclone, a number of simulations have indicated that the RSM is capable of reproducing the salient flow features in cyclones [5-6].
Flow pattern simulation in the cyclones was conducted using the commercial CFD package FLUENT 6.2.
Fig. 1 Static pressure in hydrocyclone at axial station of Z=0 mm Fig. 2 Tangential velocity in hydrocyclone at axial station of Z=0 mm Conclusions In order to understand the flow field in hydrocyclone for potash ore desliming, the detailed flow field information was obtained through CFD simulation.

Verification and validation (V&V) are the primary means to assess the accuracy and reliability in computational fluid dynamics (CFD) simulation.
Finally, some suggestions are given about V&V of the detonation CFD model.
Based on the physical modeling, the computational method as well as the numerical simulation described in this article, we introduce the CFD of detonation and a basic model of V&V.
Relying on the software LAD2D [6] and a large number of benchmark testing models, the V&V of the multi-medium CFD detonation model is provided.
The technology of correctness verification and the methods of the confidence validation in the detonation CFD model are given. 3.

The purpose of this study was to develop a computed fluid dynamic (CFD) simulation model to analysis the effects of human gait on air distribution in proposed contagious isolation tent ward.
CFD dynamical simulation and gait experiment of contagious isolation tent ward Based on the CFD mesh model of contagious isolation tent ward, the static and dynamical ventilation simulations were implemented.
Computed fluid dynamical simulation was implemented through a commercial available CFD simulation software Fluent 6.3 (Fluent Inc., USA).
Two methods, including experimental measurement and computational fluid dynamics (CFD) simulation, were commonly adopted in these studies.
Because experimental measurement required a lot of time and expense, CFD simulation became one of the most economic and efficient tools to investigate indoor airflow distributions.

CFD simulation has been verified using available experimental results.
However, the application of CFD models is on a case by case basis.
There is no universal CFD model that can be used in all the different cases [13].
Simulations of a ship’s propeller wash.
CFD calculation and experimental validation of a Kamewa high-skew marine propeller.

The results showed that macro-mixing scale-up model agreed well with CFD simulations but the micro-mixing scale-up model had a less precision compared with that of macro-mixing model.
All the simulations in this work used same boundary conditions.
The details of cases and the length needed to reach 98% mixing both gotten from the scale-up equations and from the CFD simulations were demonstrated in table 1.
Table 1 Comparison of CFD Simulation and Scale-up Equation results under different conditions Cases index d/D uj/um Macro-mixing Micro-mixing L/d (CFD) L/d (Eq） relative deviation（%） L/d (CFD) L/d (Eq) relative deviation (%) 1 1/6 2 74 81.66 9.38 66 88.59 25.50 2 1.5/6 3 39 39.087 0.22 35.33 34.72 -1.76 3 2/6 4 22 23.175 5.07 16 17.87 10.46 4 2.5/6 5 15 15.45 2.91 10.52 8.33 -26.30 5 3/6 6 12.37 11.09 -11.54 9.12 7 -30.29 Conclusions In this paper we investigated the micro- and macro-mixing in the mixing section of ejectors.
The results showed that macro-mixing scale-up model agreed well with CFD simulations but the micro-mixing scale-up model had a less precision compared with that of macro-mixing model.