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To investigate the mixing uniformity between tracer gas and gas stream in the duct, numerical simulations of the CO tracer gas and air mixing in a 300mm diameter and 90 degree elbow duct were performed on the commercial CFD software FLUENT, and the comparisons between the simulation results and experimental data were analyzed.
The results indicated that the tracer gas concentrations of simulations were agreed with the experimental data.
Experimental set-up and numerical simulations Experimental set-up.
The simulation results are showed good agreement with the experimental results.
The simulation results were in good agreement with the experimental data.

Numerical simulation and analysis of 3-D internal flow field In mechanical turbulent coal pulverizer Wei Lv1,a , Zhi-yue Yao1,b , De-li Zhang1, Xin-hai Wang1, Xiao-nan Zhang1, and Zhong-xia Zhao1 1School of machinery and power engineering, Harbin University of Science and Technology, Harbin 150080, China aziyi2011@sina.com, byaozhiyue@sina.com Keywords: turbulent coal pulverizer; numerical simulation; pressure; velocity Abstract.In this paper, the computation fluid dynamics ( CFD) software FLUENT is applied to analyze the internal 3-D gas flow of the mechanical turbulent coal pulverizer impeller, especially on the pressure and velocity distribution.
Fig. 7 Pressure distribution of wall surface Fig. 8 Velocity distribution in z = 35 mm Fig. 9 Velocity distribution of tooth circle section Fig. 10 Velocity distribution of export section Conclusions In this paper , single-phase flow fields of coal pulverizer were investigated by numerical simulation.
Fluid simulation calculation example and application in FLUENT[M].Beijing:Beijing institute of technology press,2004:285—296
Numerical simulation of three-dimensional flow field of centrifugal fan[J].

Ltd, Shanghai, China Keywords: regenerative furnace, switching model, flow character, numerical simulation; Abstract.
So, on the basis of analyzing the burning and heat transfer mechanism, the physical and mathematical model of the heating section was built and the CFD was used to research the influence of four classical switching models on the flow profile.
Numerical simulation method Gambit 2.3 was applied to build the geometry model and mesh it.
Numerical simulation of the combustion[M].Beijing: Science Press, 1986
Numerical Simulation on the Effect of Switching Modes on the Thermal Process of a HTAC Reheating Furnac[J].

Numerical Simulation Study of Metal Transfer in MIG Welding with Magnetic Control Chao Yang1,a ,Shuyuan Jiang1,b, Haibo Bi1 1Institute of Aviation Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, China a cyang25@163.com， b jsy80131@163.com Keywords: magnetic control, MIG welding, metal transfer, numerical simulation Abstract: This paper simulate the mode of metal transfer in MIG magnetic control welding by using CFD software FLUENT, establishing mathematical model based on fluid dynamics and electromagnetic theory, and simulate the form, grow and drop process of metal transfer with and without magnetic.
Recently, many scholars have deeply analyzed and made some strides in numerical simulation of drop transfer [3-4].
But the model of metal transfer have not been reported by using numerical simulation in MIG welding with longitudinal magnetic field, so this paper simulates the of metal transfer mode, by using software FLUENT, analyzing the magnetic field how to affect drop transfer.
Fig.5 Diameter change of drop transfer Fig.6 Height change of drop transfer with additional 1.8mT magnetic field with additional 1.8mT magnetic field Conclusions 1) Established the model of drop transfer in MIG welding with and without magnetic field by using FLUENT software, and the simulations under the condition of having 1.8mT magnetic field and without are come true.
Numerical Simulation and Control of Molten Droplet Shape in Short-circuit CO2 Arc Weld [J].

The CFD simulation shows that the flow field is symmetrical during the inlet and outlet, as shown in Fig. 5.
CFD simulation of parylene deposition chamber. 3.
The parylene TGA inspection, CFD simulation, and modification of parylene deposition chamber and water-proof testing improved uniformity by 6% in the nanometer scale to meet new applications of parylene, such as the delamination layer of OLED, TSV, and water-proofing mobile phones.

Investigation on Laminar Flow Field Performances in a Dual-Impeller Stirred Tank Deyu Luan1,a, Shenjie Zhou2,b and Songying Chen2,c 1 School of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China 2 School of Mechanical Engineering, Shandong University, Jinan, 250061, China aqddy05@163.com, bzhousj@sdu.edu.cn, cchensy66@sdu.edu.cn Keywords: dual-impeller, stirred tank, laminar model, numerical simulation, layer clearance Abstract: The 3D flow field generated by a dual-impeller in the agitation of glycerin fluid was simulated using the commercial CFD package.
In this study, We focus on the performance of a dual-impeller stirred tank with four different combinations using CFD Fluent V6.3® software.
Both regions were discretized by unstructured tetrahedral grid (Fig.1) for the simulation, in which the rotorregion adopted finer grids with the grid cell numbers of 346,000 or so, while the static region used relatively coarse grids with the grid cell numbers of 358,000 around.

The finite volume method, by means of CFD FLUENT, is applied in this contribution.
The grid independence tests were performed by realizing CFD simulations in the domain examined, using different structured quadrilateral-type grid systems with the number of mesh nodes ranging from 35 to 145 along the channel depth and 95 to 370 along the length.
(iii) The rest of this research work could also be oriented towards three-dimensional modeling and simulation studies of the entire plane air solar collector.
Shi, Performance comparison of rod-baffle and segment-baffle heat exchangers using numerical simulations, Applied Mechanics and Materials 595 (2014) 128-133
Kang, Numerical simulation of flow fields in different baffled flocculation reactors, Advanced Materials Research 550-553 (2012) 3037-3040

Numerical Research of Deposits Formation and Influence on the Heat Transfer Process Lin MU1, a, Hongchao YIN1,b 1 School of Energy and Power Engineering, Dalian University of Technology, 116023, Dalian, China awwt650420@sina.com.cn, bhcyin@dlut.edu.cn Keywords: Ash Deposition, Deposits Growth, Heat Transfer, CFD.
In addition, deposition rate, deposits distribution and variations of deposits with the running time were also predicted by numerical simulation method.
The gas-solid two phase Eulerian-Lagrangian model based on Computational Fluid Dynamics (CFD) code is applied to simulate complex turbulent flow field, temperature field, stochastic particle trajectories and heat transfer process in the HRSG.
A strong deposition tendency along the simulation time is found in the HR3 with average deposition thickness nearly 11mm.
The results of numerical simulation have a reasonable agreement with the field measurement in the industrial scale HRSG.

The temperature distribution is usually modeled using a thermal analysis with a surface heat flux [7] or a CFD model, which considers the effect of material movement on temperature gradient [8].
In Eulerian method, there is no problem with mesh distortion as in a Lagrangian method and it has been used earlier for themomechanical simulations in drawing and rolling processes [6].
Shercliffa, 3-Dimensional CFD Modelling of flow round a threaded friction stir welding tool profile, J.
Reynolds, Parametric studies of friction stir welding by commercial fluid dynamics simulation, Sci Tech Weld Join. 11 (2006) 200-209
Analysis of transient temperature and residual thermal stresses in friction stir welding of aluminum alloy 6061-T6 via numerical simulation.

From the standpoint of CFD, this paper analyses the hydraulic clamping phenomenon and the effect of different kinds of pressure-equalizing grooves on hydraulic clamping force based on Fluent.
Fig. 5 Three-dimensional models for simulation Generate Mesh.
Then do the simulation for spool with one or three rectangular grooves.
Then do the simulation for spool with three triangular grooves.
[4] Fujun Wang: Principle and Application of CFD Software.