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This paper uses CFD technology to simulate the exhaust plume of a specific rocket on different working conditions, with two-phase flow involved.
To have a precise simulation of solid rocket exhaust plume, two-phase flow must be considered appropriately.
During the simulation, the reaction between the exhaust and ambient air is not involved.
Numerical simulation of composite solid propellant rocket motor exhaust plume[J].
Simulation of the two phase flow in solid rocket motors[C]. 32nd Joint Propulsion Conference and Exhibit, 1996

The Comparison of CFD Flow Field between Slope Solar Energy Power Plant and Traditional Solar Chimney Power Generating Equipment Qingling Lia, Xiaoqing Xieb, Jun Chaoc, Xuan Xind and Yan Zhoue Shandong Provincial Key Laboratory of Polymer Material Advanced Manufacturing Technology, Qingdao University of Science &Technology.
We take the steady state to do numerical simulation.
The simulation result of temperature field Fig 6.
The simulation result of temperature field Fig 8.
The simulation results can be used to verify the theory analysis and calculation.

This approach was applied separately wind tunnel test and numerical simulation, to obtain six aerodynamic coefficients of the corresponding heavy duty truck model, and the numerical simulation method was proved to be true by comparative analysis.
The model used in simulation is the same with that in the wind tunnel test, and their boundary conditions are same as well.
CFD (blue) in Fig.3 refers to the result of simulation, while test (red) refers to the results of wind tunnel test.
We can find that there is little difference between the results of the simulation and wind tunnel test whose relative errors are within 5%, which has verified the validity of the numerical simulation.
As a result, the numerical simulation method can be used in the crosswind aerodynamics research of the heavy duty truck.

Study on Vehicle Emissions Dispersion in Asymmetrical Street Canyons and Proper Location of Air Intake for Ventilation System GUOHUA Gao1, a, JING Liu1,b, FEI Ma1,c ,WEIDONG Luo1,d 1 School of Mechanical Engineering, University of Science & Technology Beijing, Beijing, China agaoguohua2011@163.com, bliujing_ustb@163.com, cyeke@ustb.edu.cn, dluowd@ustb.edu.cn Keywords: CFD, Street canyon, Traffic pollutants, air inlets Abstract.
Numerical Simulations Model Description.
In the simulation, street canyons’ lengths are assumed to be greater larger than their width.
The simulation results shows that personal exposure of people are lower in the street canyon Ⅳ than other street types studied in this paper.

It will extract the simulation animation and the contact force between cutter and rock. 4.
Cutting simulation for different hole conditions in the figure 8, 1) no holes borehole cutting process simulation.
After ANSYS dynamics simulation calculation and analysis, VB program will output the simulation animation and data of the resulting file to the data interface.
Figure10: Cutting simulation animation Figure9: Cutting force data 5.
Development of Hydrochlone’s Optimize-Design System Based on CFD, Oil Field Equipment [J], 2007, 40-42

The DES unsteady simulation based on S-A model was applied to analyze the noise in the flow domains which are consist of the volute and the impeller passage in the paper.
Yang Liu [6] predicted the pressure fluctuation of axial pump and centrifugal pump operating at multiple conditions through the method of large eddy simulation, concluding the characteristics of time and frequency domain at monitoring point.
This paper based on CFD software (Fluent) and sound vibration analysis software (SYSNOISE), aimed at research difficulties of internal flow noise for the model centrifugal pump, via the data interface between Fluent and SYSNOISE, and used the CFD and acoustic solver coupling method to solve the internal flow noise in centrifugal pump.
Fig. 4 shows the vortex distribution and the tongue of partial enlargement on three different working conditions of unsteady simulation of initial moment (t=0).

Predictive and descriptive models for hydraulic simulations and associated fish passage can provide a better understanding of the hydraulic forces fish confront in attempting to navigate these facilities.
Computer modeling such as computational fluid dynamics(CFD)--a three-dimensional numerical computer modeling technique--is often used by engineers to obtain detailed flow field characteristics, such as water velocities and pressures, within a hydraulic system.
CFD is an economical and fast way to determine flow behavior in the hydraulic system, and complements the use of traditional hydraulic physical models [20].
Hydraulic information from the CFD models could be used to design fish passage systems like prototype surface collectors and to investigate potential linkages between project operations.

Model structure and numerical study method In this work, a comprehensive model of fluid dynamics and species transport is applied to the kitchen extractor modeling by using computational fluid dynamics commercial (CFD) software FLUENT.
Negative pressure of the pumping circle and positive pressure of the gas-film-jet used in 10 simulation cases are presented in Table 2.
Pressure boundary conditions in different cases Simulation Results 3D-calculation results of single case.
Followings are the simulation results on the z=0 sectional plane under the condition of Case2, as shown in Fig. 3.
Numerical simulation of kitchen ventilation.

Numerical Simulations of Aerodynamic Feature for Variable Speed Offshore Wind Turbine Ping He a , Naichao Chen b and Danmei Hu c School of Energy and Environment Engineering, Shanghai University of Electric Power, Shanghai, 200090, China a hyccnc@126.com, byeiji_chen@126.com,cHudammei@sheip.edu.cn Keywords: Offshore wind turbine, Variable speed, Two-phase flow, Stall speed, Wind force.
Table 1 Geometrical parameters of NRELS809 series aerofoil Radius (m) Chord length (m) Established angle (°) Radius (m) Chord length (m) Established angle (°) 0.508 0.218 0 2.867 0.574 2.083 0.66 0.218 0 3.172 0.543 1.15 0.884 0.183 0 3.185 0.542 1.115 1.009 0.349 6.7 3.476 0.512 0.494 1.068 0.441 9.9 3.781 0.482 -0.015 1.133 0.544 13.4 4.023 0.457 -0.381 1.258 0.737 20.04 4.086 0.451 -0.475 1.343 0.728 18.07 4.391 0.42 -0.92 1.51 0.711 14.29 4.696 0.389 -1.352 1.648 0.697 11.9 4.78 0.381 -1.469 1.952 0.666 7.979 5 0.358 -1.775 2.257 0.636 5.308 5.305 0.328 -2.191 2.343 0.627 4.715 5.532 0.305 -2.5 2.562 0.605 3.425 　 　 　 Fig.1 Three-dimensional simulating model of horizontal-axis wind turbine CFD Calculation.
A computational fluid dynamics (CFD) method is adopted to exploit the aerodynamics of offshore wind turbine in this work.

A Data Hub Model for Simulation-based Ship Design J.S.
The model is simulation-driven and consists of two main parts, including data management and integrated simulation environment.
Simulation-based ship design data is stored in XDMF domain.
DFx simulation, Finite Element Analysis (FEA) simulation, and virtual navigation simulation.
Tribon and 3DMax are used as the ship CAD modeler, Nastran as structure, strength and vibration solver, and Fluent as CFD solver.