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In order to improve the life of tuyere, the flow fleld and temperature field of tuyere were simulated by using computational fluid dynamics (CFD).
Simulation results show that the maximum temperature appears at the front margin of tuyere outlet side.
This text employs CFD to describe flow field and temperature field of water-cooling BF tuyere, and analysises temperature distribution in different water-presure.
Simulation results and analysis Field and temperature field of water cooling tuyere BF tuyere velocity vector and the temperature field were calculated with changing inlet pressure from 0.1 to 1.0 MPa.
Numerieal Simulation of Temperature Field and Stress Field in the Tuyere[D].

Numerical Simulation of Flow and Heat Transfer with Large-eddy Simulation in a mixng T-junction Tao Lu1,a, Xingguo Zhu1,b, Ping Wang2,c,* and Weiyu Zhu3,d 1.School of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China 2 School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China 3.China Petroleum Liaoyang Petrochemical Company, Liaoyang 111003, China alikesurge@sina.com, bzxg20055445@126.com, cwp2006@dlut.edu.cn, dlhbjbzwy@sina.com * Corresponding author Keywords: Numerical simulation, flow, heat transfer, large eddy simulation Abstract.
In the present paper, large-eddy simulation (LES) based on commercial computational fluid dynamics (CFD) software FLUENT for prediction of flow and heat transfer in a mixing T-junction was completed.
In this respect, CFD is a good way of predicting the mixing phenomenon in a T-junction and recent researches show that large eddy simulation has validation[1, 2].
Table 1 Calculation conditions Main duct Branch duct ΔT Ri MR u/m/s T/℃ Re Pr u/m/s T/℃ Re Pr 0.1 16.89 9213 7.66 0.2 11 7864 9.2 -5.09 -0.029 0.5 In this work, LES is used for the simulation.

In simulations, the theoretical model is based on the time-dependent three- dimensional conservation equations of mass and momentum.
As the first step toward the simulation of multiple injectors, this work focuses on the study of droplet deformation behavior for a single injector.
Liquid Breakup Liquid Breakup Figure 3 (a) Progression of droplet formation; (b) Time evolution of velocity vector fields during the droplet breakup stage Figure 4 Time evolution of droplet formation for different liquids Conclusions Numerical simulations are performed by the computational fluid dynamics computer package CFD-ACE+® to investigate the droplet formation behavior for a piezo-actuated micro-injector.
For the simulation code validation, the predicted droplet meniscus shape is in good consistency with Shield's micro-photographed images.
Lin, Taiwan ROC Patent Number: 194947, in Chinese. (2004) 23) CFD-ACE+ TM User's Manual, ESI-CFD Inc., Huntsville, AL, USA; Web site: www.cfdrc.com

The simulation of internal flow field in nozzle with different cavity length was carried out by using CFD.
Simulation results are in agreement with Experimental results.
Based on standard κ-ε model and using CFD, the numerical simulation of two-dimension flow field of the cavity was carried out seeking the distribution rule of internal flow field, thus optimizing cavity structure.
The fluid medium is water in the simulation process.
Results and analysis of numerical simulation.

Resource requirements: Apart from the usual resources such as lecture notes, bibliographies, journal articles, various data sources (e.g., ESDU data), materials from Federal Aviation Regulations (FAR) and Civil Aviation Safety Authority (CASA) and so forth, the advanced design project also requires CAD/CAM, CFD and Wind Tunnel and Flight Simulation facilities.
Fig.1: CATIA generated view of SS-07 There was, however, difficulty in obtaining reliable CFD and wind tunnel data at the very low speed of MASD speed.
During the CFD analysis, the k-epsilon standard, RNG and Realizable turbulence models were used to determine the lift and drag coefficients between 0-8 degrees angle of attack.
This was determined from the flight simulation as being due to gyroscopic forces generated by the fan.
Conclusion It has been demonstrated that the advanced project study concept can be successfully applied in aerospace engineering design through a combination of theoretical calculations, numerical (CFD) and physical experimentation (Wind Tunnel) and flight simulation (X-Plane) studies.

Based on the wind resistant design of a super long suspension bridge —the Aizhai Bridge, which is located in the mountainous area and designed across a deep valley with a main span of 1176m, as shown in Fig 1, in this paper, the commercial CFD software FLUENT is used to simulate mountainous valley terrain and investigate the characteristics of the local valley wind field as well as its effects on the wind design.
One of the difficulties encountered in the simulation is the construction of the large scale digital terrain model with suitable resolution.
Fig 1 Perspective view of the Aizhai Bridge Fig 2 Domain of integration for simulation Fig 3 Point-cloud data of the selected domain Fig 4 Three dimension terrain surface generated Mesh of the domain After the surface model of the terrain was generated, it can be input into the CFD software of FLUENT to form the volume for the numerical simulation.
It is well known that the best numerical mesh is the result of a compromise between computer simulation requirements (memory and time), accuracy, and topographical resolution.
The volume of simulation domain was separated into two parts from the height of 300m above the surface for the purpose of generating better meshes.

In this paper, an urea spray model is established and simulated by CFD software FIRE with different nozzle structure parameters such as nozzle hole number, nozzle hole chamfering and spray angle.
Fig. 1 shows the simulation modeling of urea spray.
Simulation results of 4 nozzle hole.
Simulation results of 8 nozzle hole.
Wen: Muti-dimensional Numerical Modeling of Spray Mixing Process in Desiel Engines Bsed on CFD(PhD thesis, Huazhong University of Science and Technology 2004).

Optimization of Sonic Boom Suppression by Off-body Energy Deposition FENG Xiao-qiang1, a, LI Zhan-ke2,b SANG Jian-hua3,c, SONG Bi-feng4,d, 1School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China 2School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China 3School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China 4School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China a fxqnwpu@163.com, b lzk@nwpu.edu.cn, c angianua@yeah.net, dbfsong@nwpu.edu.cn Keywords: sonic boom; CFD; off-body energy deposition; shock wave Abstract: Sonic boom suppression method is the key technology of next generation supersonic aircraft.
Off-body energy deposition analysis software is developed based on CFD, waveform parameter method and NSGA-II genetic algorithm.
Wu Li researched the mixed fidelity approach for design of low boom supersonic aircraft by using CFD and SGD inverse design method [3].
Figure 2 Sketch of sonic boom suppression by off-body energy deposition 2.2 Numerical simulation method The effects of energy deposition are investigated using a three dimensional Euler equations and the set of Euler equations with energy deposition in GCC coordinates are shown in Eq.4~Eq.8 [7]: (4) (5) (6) (7) (8) Where ρ and p denote the gas density and pressure, respectively, u1,u2 and u3 are the x, y and z velocity components, e is the total energy of the gas per unit volume,γ is the specific heats, and N is the power density of the source of energy released in (W/m³).
Prediction of sonic boom signature using Euler-full potential CFD with grid adaptation and shock fitting[R].

Venkatraman, "Numerical Simulation of Incompressible Viscous Flow Past a Heaving Airfoil," Int.
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, August 11-13, CP 18, 2005
Ninth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, August 11-12, CP13, 2006
Eighth Annual CFD Symposium, CFD Division of Aeronautical Society of India, Bangalore, CP 18, 11th - 13th August, 2005
K., “Viscous Unsteady Flow Around a Helicopter Rotor Blade in Forward Flight”, Proc., 9th Annual CFD symposium, CFD Division of Aeronautical Society of India, Bangalore, 11th - 12th August, 2006

Numerical Simulation of the Influence of Outer Chamber Height on Flow Field in Circumfluent Cyclone Separator Jihai Duan 1,a, Xingxing Guan 2,b College of Chemical Engineering, Qingdao University of Science and Technology, No.53 Zhengzhou Rode, Qingdao, China, 266042 aduanjihai@yahoo.com, bgxx708@163.com Keywords: circumfluent cyclone; outer chamber; numerical simulation; pressure drop Abstract.
In this study, the gas flow filed in CFCs of different outer chamber heights were simulated by CFD software (FLUENT 6.2).The calculations could improve our knowledge about the effect of outer chamber structure in CFCs and provide some fundamentals for further research of CFC performance.
Fig.1 CFC configuration and grids Results and discussion Fig.2 presented the comparison of CFD simulation and experiment data of separation efficiency for CFC.
The numerical simulation results of CFC are in good agreement with the experimental data at different particle sizes.
As can be seen from this figure, although the simulation values are different, the tangential velocity profiles are nearly identical in the three CFCs.