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With the rapid development of computer technology, many scholars have used CFD to study the three-dimensional flow field in a pump [1,2,3].
Numerical Simulation Results and Analysis Pressure Distribution on Pressure Side and Suction Side of the Impeller Vane.
The reason is that the numerical simulation is a kind of flow calculation based on some assumptions.
The heads obtained by numerical simulation under all three conditions are close to that measured in the experiment.
[5] PAN Xiaoqiang and YUAN Jing, Numerical simulation of engineering fluid by using CFD software, Journal of Nanjing Institute of Technology (Natural Science Edition), 2 (2004) 62-66.

Numerical Simulation of Powered High-Lift Flow Zhibin Gong1,a, Jie Li2,b and Bin Tian3,c 1,2School of Aeronautics, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, P.
Though accurately simulating three-dimensional subsonic flow over transport aircraft with powered high-lift systems remains one of the most difficult challenges of modern CFD, great improvements have been made during the past decade. 3D time-dependant compressible Reynolds-Averaged Navier-Stokes equations are solved for the powered lift simulation.
A., and Chaffin, M., “Overview of the First AIAA CFD High Lift Prediction Workshop (Invited),” AIAA Paper 2011-862. ] from the 1st AIAA CFD High Lift Prediction Workshop (HiLiftPW-1) is selected to assess the accuracy of CFD methods for high-lift configurations.
Fig.2 presents the meridian grid for simulation and shows surface pressure comparisons on fan cowl and outer core-cowl surfaces, the computational results and experimental data are in good consistency.
For more accurate simulations, further efforts have to be made to contribute to the powered high-lift aerodynamic design for STOL transport aircraft.

FLUENT is used to perform simulation of propeller at different wind speeds.
The simulation is done with MATLAB software.
This research used computational fluid dynamics (CFD) to simulate the performance of wind turbine propeller made with sandwich composite.
This length then divided into 20 elements for simulation purposes based on blade elements theory.
Model of Sandwich Composite Propeller Spallart-Almaras model performed on FLUENT simulation.

The more suitable way is to combine a virtual-engine simulation with some basic experiments used for initial calibration of engine model and finally for the confirmation of optimum results checking the vicinity of simulation-predicted optimum matching.
Supercharged turbocharged engine modeling and simulation All of the modeling and simulation work for full load and Performance was done using Gamma Technologies GT-Power, a commercially available 1-D CFD tool (figure1).
GT power simulation of Engine The engine model was based upon a calibrated model of a 1.7L turbocharged SI engine.
It was respected during simulation by maintaining the same safety margin to the knock limit or admitting the same (small).
Vitek, J,Masek, P.Baumruk, “Simulation of supercharged and turbocharged small spark-ignition engine “,MECCA 3/2003

Flow Field Analysis of a Horizontal Wave Flow Turbine Power Plant Based on FLUENT Shiming Wanga, Ka Tian*b, Chao Lvc, Yanan Wangd Engineering Institute of Shanghai Ocean University, Shanghai ,China;201306 asmwang@shou.edu.cn;b tkqq111010@163.com; cclv@shou.edu.cn;d3530245322@qq.com Keywords: Renewable energy; Turbine; Power generator; CFD; FLUENT.
FLUENT, as one of the computational fluid dynamics (CFD) software becomes the main software in solving engineering fluid issues [3-5].
Control Equations For saving calculation time, CFD took simplified Reynolds Model of two equations to calculate rotation issues[6].
, , (3) Simulation Power Plant Introduction.
Fluid engineering simulation and analysis of fluent [M].Beijing: Press of Beijing Technology Institute ,2009

A Novel Design of Air-cooled Battery Thermal Management System for Electric Vehicle Jiang Chao a, Tang Zhiguo b*, Hao Jiaxin c，Li Huiqing d School of Mechanical and Automotive Engineering, Hefei University of Technology, Hefei, 230009, China ahfutjiangchao@mail.hfut.edu.cn, b*tzhiguo@hfut.edu.cn, chaojiaxinxin@163.com, dlihuiq@mail.hfut.edu.cn Key words: Battery pack; Thermal management system; Simulation.
Visualized simulation analysis of the thermal management system is carried on under different working conditions by CFD, then the structure parameters will be optimized.
In this paper, a novel air-cooled thermal management system is designed, and simulation analysis of the thermal management system will be carried out to optimize the structure parameters of battery pack, and to evaluate the thermal performance of cooling and preheating conditions. 1.
Transient simulation has been conducted by CFD under high-temperature and low-temperature conditions.
Numerical simulation results of final project The battery arrangement of Option 2 is adopted in the end, two fans work alternately and the work cycle is 120s, and the power of the evaporator and the heater are both 400W.

So, the numerical simulation presented in this paper was applied for such as test spindle.
Table 1 Parameters of the test spindle Parameter Value/Type Rotational speed (rpm) 0-4500 Bearing span (mm) 322 Max diameter of shaft(mm) 100 Length of shaft(mm) 476 Preload (N) 570 Front bearing B7211-C-T-P4S Rear bearing B7208-C-T-P4S Base oil Kluberspeed BF 42-12 Numerical Simulation To the classic spindle a steady state thermal coupled with a static mechanical simulation is used and for water cooled spindle a computational fluid dynamics (CFD) coupled with static mechanical is used.
For CFD simulation the generated heat loads are the same with the steady state thermal simulation, water channels 1 and 2 are presented in Table 2 and Fig. 2 shows the water channel 1.
Pressure 1 atm Dynamic Viscosity 8.90E-04 kg/m*s Thermal Conductivity 0.6069 W/m*K Thermal Expansion 2.57E-04 1/K Thermal and CFD respectively, are coupled with the static mechanical simulation.
The numerical simulations allow the evaluation of the temperature distribution and the induced displacements.

Therefore, based on the Computational Fluid Dynamics (CFD) and the related theory of safety system science, leak and diffusion processes of high pressure liquid oxygen in spherical tank area, and the subsequent potential oxygen poisoning was analyzed by accident consequence assessment method.
Conclusions Combining CFD with Safety System Engineering, leak and diffusion processes of high pressure liquid oxygen in spherical tank area were numerically predicted.
References [1] State Administration of Production Safety Supervision, in: Safety Assessment, edited by Coal Industry Publisher, Beijing (2005) [2] Jianhua Li, Zhenghua Huang, Xiong Deng, Chlorine Gas Leaking Behavior and Diffusion Model, Proceedings of 2006(Shenyang) International Colloquium on Safety Science and Technology, Shenyang (2006) [3] Yuanhui Wang, Safety System Engineering, Tianjin University Press, Tianjin (1999) [4] Lixing Zhou, in: Turbulence Two Phase Flow and Numerical Simulation of Combustion, edited by Tsinghua University Press (1991) [5] Zong-xiang Li, CFD simulation of spontaneous coal combustion in irregular patterns of goaf with multiple points of leaking air, Jounal of China University of Mining & Technology.2008, 18(4):504-515

Introduction With the development of computer and CFD software,more and more engineering using numerical simulation method to simulate the thermal environment, air distribution characteristics,and indoor pollutants concentration of the building to be built or built,which can optimize the indoor environment, save costs and improve efficiency.In this paper, the similarity theory is applied to numerical simulation, providing ideas for expanding the numerical calculation.Use thermal environment similarity theory and combine the numerical simulation and experimental measurement verification to study model building and its similar zoom models construction.
Numerical simulation of buildings and similar building models Simulation calculation steps of large space air-conditioned buildings building thermal environment model is shown in Figure 1.
simulated conditions, Because the indoor heat is very small (only the test operator), the test conditions of this heat source is not considered in the simulation room.Indoor cooling load derived from main building envelope,in which the roof heat transfer cooling load is maximum.Due to the large space air-conditioned buildings is generally larger roof heat flux, temperature gradient is high, wall function model is visible.Continue to set the operation, three model calculations and experimental test volume in Figure 4.It can be seen from the figure: Fig. 3 First simulation Fig. 4 Second simulation (1) The second simulation model of vertical temperature distribution trend is consistent with the experimental values,The simulation results is significantly better than the first simulations which verify a larger impact on the roof of a large space air-conditioned buildings indoor thermal environment; (2) Compared standard standard k-εmodel and RNG model to realizable
,the first two simulation results is more consistent with the experimental values.
[5] HU Yu.large space building and its similarity to enlarge the building indoor thermal environment simulation analysis [J].

In order to design the structural components for this mini-scale vehicle, commercial CFD software was adopted to simulate flows.
Flow simulation was conducted to understand the performance of this design.
A commercial CFD software, FLUENT, was used to simulate the fluid flows through this underwater vehicle, and helped to identify areas for improvement in the external shape design.
Fig. 1 Initial external structure design Fig. 2 Meshing results of the main channel The simulation result of streamlines is shown in Fig. 3.
The external shape was modified after CFD simulation in order to have better streamlines distribution and less wakes and separation.