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The air flow rate and temperature distribution simulated by CFD (Computational Fluid Dynamics) software, and the results are consistent with that of experimental test.
Heat steady-state test and simulation The heating power of the system should be keep constant during the unsteady-state heat conduction test.
According to the experimental parameters, the temperature and air flow rate distribution of system in heat steady-state has been simulated by 6SigmaDC (CFD software, Future Facilities Co.), and the simulation results are shown in Fig. 4.
Simulatuon results by CFD software Ti1 To2 Ti2 To1 (a).
The simulation results of system air flow rate and temperature distribution by 6SigmaDC are consistent with the experimental test values.

The development of CFD technology can help to predict the aerodynamic performance.
It’s time-saving (compared to frequent CFD calculation) and targeted (compared to optimization algorithms that need manual intervention).
Since we could not do experiments for all the foils, some CFD methods is used here in the Dyn-Collecter.
ECCOMAS CFD 2006
Chemical Industry Press, 2001 [7] Yan Pingfan, Zhang Changshui: Simulation of artificial neural networks and evolutionary computation (2nd Edition).

Simulation Study for Mixing Characteristics of NH3 and Automobile Exhaust in the SSCR System Dawei Qu1,a Kai Zhang2, b Luyan Fan3,c,Haibo Gao4,d 1,2,3State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, China 4,Passenger Car Department Passenger Car Design Section II,FAW Co.
Figure.1 Urea solution injection model’s grid Table 1 Parameters of jet model correction spray height 120mm spray pressure 0.55MPa Spray angle 65° Injection duration 32ms Nozzle hole number 1 Urea injection amount 0.1g Nozzle hole diameter 0.4mm The wall temperature 650K The analysis of simulation results Figure 2 shows CFD simulation results which the urea solution spray from 10ms to 110ms , the image for each interval of 10ms .As can be seen from the graph, the spray shape is a conical hollow in the middle, the cone angle is about 50 degrees to 60 degrees, with the passage of time, the end of the spray, mist droplets collides wall , and after collision the rebound area increases gradually.Fig.3 are the experimental results of the spray, the experimental results are quoted from the [3], it uses spectrometer photographic, no specific scale, mainly for image research.
Figure.3 The experimental results of pipeline urea spray model Figure.2 The CFD simulation results of urea water spray Simulation and analysis of affect factors for the jet of SSCR system Using FIRE establishes the model that NH3 directly injects in the exhaust pipe in front of SCR box .Fig.4 is simulation model for the exhaust pipe, length 1.36M, diameter 0.12M,grid number 100000.The nozzle position is in x=0, y=0.05, z=-0.28.
NH3distribution of the literature [2] and the simulation graphics are compared,studying the difference between the two, and analysing the advantages of direct injection of NH3.
Simulation study of NH3 and the gas mixing characteristics for SCR system[J].Journal of internal combustion engine.2013(204) 43-47

As computational fluid dynamics (CFD) of the progress and performance of computer hardware improving, the accuracy of three-dimensional numerical simulation of turbulent flow increases.
Numerical simulation technology has become a powerful tool for development, design and optimization of hydropower stations [1-4].
Water level and flow parameters Parameter In Power In Pump Flow rate(double) 109.06m³ 80.4m³ Size of outlet section of diversion tunnel 28.2m2 28.2m2 Numerical simulation method This calculation uses a one-way flow simulation and k-ε model.
Simulation example results meet the requirements.
A CFD approach to the computation of the acoustic response of exhaust mufflers.

Based on the theory of fluid dynamics, this study uses CFD software Fluent 6.3.26 to conduct numerical simulation of the models in wind tunnel tests by Yong Chul Kim involving four working conditions of different spacing or area density in regular arrangement.
On the contrary,numerical simulation has the advantages of low cost and easy operating,etc.
Scholars in late 1980s researched wind tunnel testing and numerical simulation of wind field and environment of building culsters.
Numerical Simulation Numerical simulation adopts professional CFD software platform Fluent 6.3.26 and it is based on the steady-state Reynolds averaged N-S equation and uses turbulent enclosure model and turbulent diffusion to seek out solutions.
Conclusions The results of numerical simulation are consistent with that of wind tunnel tests conducted by Yong Chul Kim, Akihito Yoshida.

Then the gas pressure drop and velocity distribution in flue pipes using CFD are discussed.
In the present CFD analysis, the standard k-ε model is employed, which has been found to be of a wide applicability[4,5].
In this study, second-order upwind scheme has been applied for simulations.
During the simulation, the ash layer is assumed steady.
Larachi, Analysis of flow in rotating packed beds via CFD simulations-Dry pressure drop and gas flow misdistribution.

All of these make the numerical simulation of propeller is the one of most challenging problems in computational fluid dynamics (CFD).Many researchers and designers use experimental techniques and simplified numerical method based on potential flow theory, such as vortex lattice method, boundary element method, so far.
Most of the studies show great advancement of CFD technologies and feasibility of the approaches.
Chen[6] presented a simulation of propeller P4118.
The CFD results are presented for comparison and validation, as well as flow field analysis.
It is selected by ITTC to validate the Compute Fluid Dynamics (CFD) method.

Research on hydro-dynamic of Column Body water-entry with six-DOF at high-speed Shanqi Wua, Xingwu Kangb No.501 Faculty,Xi’an Research Institute of high Technology, Xi’an 710025, China agjhy2014@163.com, bxwkang@163.com Keywords: dynamic grid, high-speed, hydro-dynamic, water-entry, CFD, six-DOF, flow field Abstract.
By using the commercial CFD software Fluent6.3, the three-phase (water, air, vapour) flow field with natural cavitation was established.
A lot of works have done in theoretical analysis and in numerical simulation, and many accomplishments have had based on the von Karman [1] and Wagner [2] theories.
To ensure the precision of the simulation, and reduce the calculated sources, the grid is thick in the region near the column and the air-water free-interface and non-dense in far-field.
Simulation result According to the basic setup, parallel calculation were launched, and the result of unsteady flow field and the moment parameters of the missile water-entry at high speed, and in the process the formation and development of the motional parameters and the hydrodynamics were gained.

The filling and cooling simulations, implemented by using the computational fluid dynamics (CFD) and heat transfer (HT) modules of COMSOL, require the simultaneous solution of non-Newtonian multi-phase flow (polymer/air) and thermal fields in non-isothermal condition and transient regime.
Framework The filling and cooling simulations, implemented by using the computational fluid dynamics (CFD) and heat transfer (HT) modules of COMSOL, require the simultaneous solution of non-Newtonian multi-phase flow (polymer/air) and thermal fields in non-isothermal condition and transient regime.
The simulation of the crystallization kinetics is performed with the in-house developed microstructure simulation tool SphäroSim.
Part used for the simulation Figure 4.
Simulation areas picked for the microstructure simulation.

In this paper, the authors use FEA coupled CFD to design the layer sequence of composite propeller and develop ANSYS subroutine to simulate resin flow in the mould.
In this paper, the authors use finite-element analysis (FEA) coupled computational fluid dynamics (CFD) method to study the hydro-elastic interaction of composite propellers in the flow.
By the simulation, the optimized laying sequence is designed to produce composite propeller.
Hydrodynamic simulation.
RTM processing simulation Mathematic modeling.