Search results

Numerical Investigation on the Effect of Abrasive Property for Abrasive Flow Machining Li-feng YANG a, Chun-yan DONG b and Wei-na LIU c Department of Mechanical Engineering, Changchun University of Science and Technology, Changchun, Jilin Province 130022, China aemail:yanglf55@163.com ,bemail:dongcy03@foxmail.com, cemail:wnliu77@163.com Keywords: abrasive; volume fraction; aperture; CFD.
The simulation results show that the lower particle volume fraction may be in favour of the metal removal uniformity, but the processing time will be too long if too low fraction is selected.
The research on the AFM process of cylindrical runner by FLUENT simulation, and analyzes the different abrasive particle volume fraction machining different aperture cylindrical runner.
A study of abrasive waterjet characteristics by CFD simulation.Journal of Materials Processing Tech. 2004, Vol.153 , pp.488-493
Lim .Process modeling and CFD simulation of two-way abrasive flow machining.The International Journal of Advanced Manufacturing Technology, 2014, Vol.71(5-8), pp.1077-1086

ICEM CFD is used in this paper to mesh the model.
（18） CFD Simulation Results Without Wings.
NUMERICAL SIMULATION STUDY OF GROUND EFFECTS ON FLOW FIELDAROUND VEHICLE BODIES, J.
Proficient in CFD Engineering Simulation and Case Combat—FLUENT GAMBIT ICEM CFD Tecplot, M.
CFD Simulation and Experimental Study on the Aerodynamic Characteristics of a F1 Racing Car, J.

A Aerodynamic Performance Research on a Wing Added Winglet REN Zhi-ni1,a , ZHU Shi-xing1,b 1Civil Aviation University of China ,Tianjing ,China arenzhini111@163.com , bsxzhu@cauc.edu.cn Key words: Winglet ; Aerodynamic benefit; CFD technology; Angle of attack Abstract: In order to reveal the science of adding winglet for Active aircraft, the paper calculates the aerodynamic efficiency of a wing added winglet using CFD technology, Aerodynamic benefit of the wing added winglet reaches the maximum when the angle of attack is 2 degree, the lift and drag reduction rate are 21.07% and 43.56% respectively.
Computational results and analysis The paper does the simulation calculation with the FLUENT uncoupled, implicit, unsteady 3D solver, the results as shown in Table 1 and Table 2.
87.217245 187.5841 3° 150.6713 87.079079 237.75038 40 200.84303 86.97036 287.81339 50 249.19419 86.521233 335.71543 Lift [N] 0° 2705.3104 -0.60409521 2704.70631 1° 2751.6728 -0.60615248 2751.06665 2° 2801.4886 -0.60849757 2800.8801 3° 2810.8514 -2.1012937 2808.7502 40 2829.6230 -3.6012281 2826.0217 50 2847.8659 -5.140641 2842.7253 Table 2 The aerodynamic calculation results of the original wing Ma Sort Attack Angle Pressure force[N] Viscous force[N] Total force[N] 0.8 Resistance [N] 0° 211.3507 66.1732041 277.523924 1° 240.1431 66.4290770 306.572147 2° 265.7991 66.5763670 332.375467 3° 294.9971 66.9135621 361.910662 40 337.8598 66.8203006 404.680101 50 378.7698 66.6881680 445.457968 Lift [N] 0° 2298.6079 -0.3007630 2298.30714 1° 2301.4518 -0.3158194 2301.13598 2° 2313.7761 -0.3364567 2313.43964 3° 2389.8596 -1.5257791 2388.33382 40 2415.4854 -2.6812813 2412.80411 50 2434.9908 -3.8311401 2431.15966 In contrast to the two kinds of aerodynamic simulation
Conclusion Using CFD can correctly solve the wing's aerodynamic efficiency.

The Reynolds Averaged Navier Stokes equations is solved by a commercial CFD program, FLUENT.
The commercial CFD program-Fluent is widely used to calculate fluid flow and heat transfer problem.
Other grid numbers are sent according to mesh quality and simulation time.
The velocity magnitude can be estimated by primary simulation.
A primary simulation of seal with 50% accentricity was conducted.

Finally, the unsteady flow field of a reduced order model development trends and application prospect were analyzed, and pointing out that the CFD simulation is still accurately predict the plane stability and handling the most important method.
In addition, the scope of application of reduced-order model is currently mostly other simple shape of the wing subsonic, transonic simulation, simulation of supersonic complex shape to be further developed.
Therefore, CFD method is still accurate prediction of aircraft stability and handling of the most important methods.
NonlinearDynamicsAnalysisofrMechanism of slender WIng Rock and study of Numerical Simulation Method [D].
Aircraft multi degree of freedom coupling rock movement numerical simulation research [D].

Research on the airflow characteristics of textile engineering with CFD is widely used and effective [3]-[6].
Simulation Experiments Mesh and Boundary Conditions.
Simulation and Results.
Yu, Numerical Simulation of Air Flow in the Nozzle of an Air-Jet Spinning Machine, J.
Qin, Air Flow in a Pneumatic Splicer by CFD, J.

Simulations are conducted for steady and unsteady modes.
Fig. 5 Fire smoke release curve Simulation Results Simulation results of defined fire scenarios are presented in this section.
Kennedy, “A CFD Analysis Of Station Fire Conditions In The Buones Aires Subway System”, ASHRAE Transactions v105, 1999, pp. 410-413
You, “CFD simulation and optimization of the ventilation for subway side-platform”, Tunnelling and Underground Space Technology, vol. 22, 2007, pp. 474–482
Jang, “CFD simulation and assessment of life safety in a subway train fire”, Tunnel.

Numerical Study of the Influence of the Geometric Parameters of a Radial Crystalizer Using a Multiscale CFD Model Gustavo Villela Rodrigues1,a*and Cezar Augusto da Rosa2,b 1Universidade Federal do Rio Grande, FURG.
Computational fluid dynamics (CFD) is an excellent tool to simulate, analyze and design complex flow systems, such as micromixing phenomena, which occur in crystallizers [1].
In all simulations, the total mass flow (solution + antisolvent) was kept constant and equal to 1.0 kg/s, corresponding to an average residence time of 1.0 s.
The simulations were carried out in a transient regime until the steady state was reached.
The use of the OpenFOAM/openCrys software in the various simulations allowed experimenting, through software, a real phenomenon remotely, which is crystallization.

This article uses CFD to study the efficiency of ventilation and pollution discharge of double polluted sources in the lab, and investigate the effect of air exhaust outlet location and air supply velocity on the performance of side ventilation.
CFD is one kind of rapidly developing computer aided design technology in recent years, CFD can be effective airflow organization simulation on indoor ventilation and air conditioning design before equipment installation.
This article explores effective ventilation method of double gaseous polluted Sources at side ventilation type by CFD.
H, room height), simulation is done at the air supply velocity of 0.4m/s,0.6m/s, 0.8m/s,1.0m/s,temperature field and velocity field is simplified as non-dimension at work area (y=3.5m,x=3m,z=0.1-1.8m).
Perceived air quality, sick building syndrome (SBS) ,symptoms and product ivity in an of office with two different pollution loads [J].Indoor Air,1999,(9):165-179 [4] Xianting Li,Bin Zhao.Numerical Simulation of Indoor Airflow[M].Beijing: Mechanical industry press,2009.in chinese

We also examined how the air exchange rate of the room, the loading factor of the sorptive materials, and the mass transfer coefficient influenced the sorptive performance; these effects were well reproduced experimentally with computational fluid dynamics (CFD) simulations.
Table 1 shows the details of the cases considered in the CFD analysis.
The boundary conditions for the CFD analysis are given in Table 2.
Model used for CFD analysis Fig. 2.
Cases considered in CFD analysis Case Temp.