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Numerical simulation Mathematics model There are six physical parameters to description the flow field in field-model.
Simulation model This paper used the FDS (Fire Dynamics Simulator) [9] field simulation program, version: 5.4.3 Serial.
Fire Dynamics Simulator (FDS), is a computational fluid dynamics (CFD) model of fire-driven fluid flow.
Fig.2 shows the vertical view of simulation model and the detectors locations.
This numerical simulation provides a method to help them chose the optimum scheme.

The fluid in this nozzle was simulated by Volume of Fluid Model through CFD.
The fluid dynamic simulation results show that diameters of nozzle opening and swirl chamber, area of spiral groove, and helix angle of the spiral groove affect the spray angle.
Fluid Flow Simulation Fluid flow simulation was conducted to describe the flowing of fluid in the swirl chamber, to analyze the effect of parameters of the swirl-core and the depth of swirl chamber on the spray angle.
Simulation Results.
Table 1 shows the simulation result of the relation between swirl chamber depth and spray half-angle.

Numerical Simulation of 3-D Chemical Non-equilibrium Flow in the Afterburning chamber of Solid Ducked Rocket Cui Li-kun 1, a, Zhang Yong-zhi 2,b and Li Zhuo 3,c 1 College of science of Inner Mongolia university of Technology, Hohhot, Inner Mongolia Autonomous Region, China； 2 Hohhot Vocational Colleges, Hohhot, Inner Mongolia Autonomous Region, China； alekuncui@sina.com, bzhangyong-zhi@sina.com, cli_zhuo@263.net Keywords: Solid Ducked Rocket; Afterburning chamber; Numerical simulation; Chemical non-equilibrium flow Abstract.
In order to reveal the complex turbulent combustion processes in the afterburning chamber of Solid Ducked Rocket(SDR), Based on the fundamental equations of hydrokinetics and elementary principles of radical reaction kinetics, using multi-component chemical reaction equation of containing Mg and Al components, the numerical simulation of chemical non-equilibrium flow in the afterburning chamber of SDR is processed and effects of the air inlet angle on the afterburning chamber is studied by using Fluent software.
Currently, many numerical simulations and experimental researches about afterburning chamber of solid ducked rocket were processed in the domestic and overseas.
In this paper, using multi-component chemical reaction equation of containing Mg and Al components, the numerical simulation of chemical non-equilibrium flow in the afterburning chamber of SDR is processed and effects of the air inlet angle on the afterburning chamber is studied.
Conclusion Based on commercial CFD software Fluent, the model of radical reaction kinetics is applied to numerical simulation of flow field.The numerical simulation of chemical non-equilibrium flow in the afterburning chamber of SDR is processed in this paper.

This paper presents a simulation study of an H-type vertical axis wind turbine.
Two dimensional CFD model using sliding mesh technique was generated to help understand aerodynamics performance of this wind turbine.
Toque of the blades could be get by simulation using FLUENT.
Simulation results Effects of the pitch angle on power coefficient.
Fig.6 Single blade torque at different pitch angle and different azimuth angle Conclusions In the study, aerodynamic performance of H-type vertical axis wind turbine was analyzed by numerical simulation.

Once the exit velocity in the coil tubing is known, the value is used as an inlet velocity boundary condition for the bottomhole and the well annulus for the subsequent CFD analysis.
The bottomhole and the cased annulus flow parameters are solved using the CFD software, FLUENT.
The present approach resulted in approximately an hour per simulation time.
The simulation utilizes the FLUENT Eulerian-granular multiphase module as its basis.
It can be helpful to CT crew in-situ without the need of detail simulation model.

Numberical Simulation of Labyrinth Screw Pump with Separated Structure by Fluent Jiaojiao Li1,a, Youchen Zhang2,b 1Beijing University of Chemical Technology, Beijng China 100029, China 2Beijing University of Chemical Technology, Beijng China 100029, China alijiaojiaobuct@163.com,bzhangyc@mail.buct.edu.cn Keywords: Labyrinth screw pump, Rotor and stator separated, Ring slots, Numerical simulation Abstract. 3D model and grid was conducted in Gambit,while single-phase flow field in the pump was simulated in CFD code-Fluent,by means of multiple reference frame (MRF) method, Renormalization group k-ε two-equation turbulence model(RNG k-εmodel) and Semi-Implicit Method for Pressure-Linked Equations (SIMPLEC) algorithm.
In the simulation,the author selected MRF model and SIMPLEC algorithm based on pressure-velocity coupling,and discreted velocity,turbulent kinetic energy and turbulent kinetic energy dissipation rate with second order wind format.
Simulation result Reference to the three different separated structure LSPs,there were ring slots between each separated sections,ring slot parameters did effect on the velocity and static pressure inside the pump.So,in the working condition that inlet flow Q=2.0m3/h,we did simulation of the three model flow field with different ring slot parameters respectively,and then analysed the relationship between the parameters and pumping performance and obtained the optimal ring slot parameters.
Conclusions The present study exhibited three new structure LSPs with rotor or stator separated,which was numerical simulated with Fluent in 3D model.The simulation results were analysed and the conclusions were as follows
(1)Numerical simulation was carried out on three structure pumps with different ring slot parameters,and found that optimal ring slot width makes pump performance the best were 5mm, 3mm,4mm respectively in rotor separated LSP,stator separated LSP and rotor stator all separated LSP

Numerical Simulation on Spreading Characteristic of Coach Fire Liang YI1,2,a, Jie CHEN1,b 1 Institute of Disaster Prevention Science and Safety Technology, Central South University, 410075, Changsha, China 2 Key Laboratory of Operation Safety Technology on Transport Vehicles, Ministry of Transport, PRC, 100088, Beijing, China ayiliang@mail.csu.edu.cn, b chenjie.20071007@163.com Keywords: coach fire; numerical simulation; heat release rate; temperature distribution.
Fire numerical simulation Model.
In this simulation the coach fire is caused by 1 Kg gasoline which spilt around the last but one row seats.
The influence of ventilation on fires were demonstrated in this simulation.
Numerical simulation on spreading characteristic of typical coach fire was performed by CFD means.

The commercial CFD (Computational Fluid Dynamics) ANSYS FLUENT V.16 was used to solve the system of equations.
Methods adopted in numerical simulations.
Numerical Simulation of Wave Flow over the Spiral-Reef Overtopping Device.
Simulation of irregular waves by CFD.
CFD Optimisation of an oscillating water column wave energy converter.

Fluid structure interaction (FSI) is a relatively new tool utilised in computational fluid dynamics (CFD) simulations of blood flow in atherosclerotic models.
Zeng et al. [8] has also carried out a CFD analysis on the physiological motion and wall deformation of a branchless right coronary artery to assess the influence of artery compliance on wall shear stress.
ANSYS CFX (v14.0, ANSYS-Fluent Inc., Lebanon, NH, USA), a finite volume based software, was coupled to ANSYS Structural (v14.0, ANSYS-Fluent Inc., Lebanon, NH, USA), a finite element based software, for the numerical simulation of the fluid structure interaction (FSI) between the solid (wall) and the fluid (lumen) domains.
Hoffman, Numerical simulations of blood flow in arteries using fluid structure interactions, PhD dissertation, Graduate School of Witchita State University, 2007

Then a computational fluid dynamics (CFD) method is used to analyze the aerodynamic performance of this integrated configuration.
It is obvious that a well approximation between our simulation and ref.[6].
Fig.2 Cabin and cargo position of the BWB Fig.3 CFD mesh of the integrated configuration Fig.4 Lift coefficeint compared with ref.[6] Fig.5 Drag polar of each BWB mesh size Results and disscussion In this paper, aerodynamic performance of the integrated configuration in cruising and taking off are simulated and analyzed.
A structured grid code was used to generate the 3-D CFD mesh based on the integrated configuration geometry.