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Fig.4.The comparison of engine power Fig.5.The comparison of engine torque The results of simulation calculation indicate chances of external characteristic effective power and effective torque caused by adopting cracking sound attenuation coupler do not exceed 0.65%. 4.3 Calculations for backpressure The backpressure of the exhaust system for the reduction amount of pressure generated by the airflow through the catalytic converter and muffler, namely, and represents respectively the average value of total pressure of the front-end and back-end of the three-way catalytic converter.
Fig.6 is a comparison of the simulation results between original muffler and cracking sound attenuation coupler, and as can be seen from figuer9 the trend is basically the same, but cracking sound attenuation coupler value is higher than simulation value.
(3)The experimental contrast verifies the correctness of numerical simulation model founded in this paper of coupling working process between the engine and exhaust system.
Computational fluid dynamics (CFD) analysis [M]．Beijing： Tsinghua Publishing House, 2004

Response of Blade Thickness to Hydraulic Performance of Stamping and Welding Multistage Centrifugal Pump MU Jie-gang1,a, ZHU Bo2, b, ZHENG Shui-hua3,c, GAN Jian-jun4,d 1College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China 2College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China 3College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China 4College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou amjg1963@126.com, bzhubo363@163.com, czneu@zjut.edu.cn, dganlet@163.com Keywords: Blade thickness, Stamping and welding multistage centrifugal pump, Numerical simulation, Hydraulic performance Abstract.
Based on CFD numerical simulation, the effect of blade thickness on hydraulic performance was studied in DQ100-64-22 stamping and welding centrifugal pump.
The simulation results about the pump head and efficiency corresponding to different blade thickness are as shown in Fig.3 and Fig.4.

Fig.7 Right suspension model Fig.8 Left suspension model Fig.9 Rear suspension model Fig.10 The new design of the rubber mount 3.2 Simulation of rubber mounts Simulation the car actual running stress condition, the rubber mounting applied corresponding frequency's vibration torque, Using CFD numerical analysis software ansys aiming at the new design of the rubber mounting for numerical analysis.
Fig.12 Right suspension first-order response mode Fig.11 Right suspension response images by 300 Hz Sinusoidal force Fig.13 Right suspension one order frequency response velocity vector diagram Fig.14 Left suspension stress distribution nephogram diagram Fig.16 Left suspension response distribution by a single sine force diagram Fig.15 Left suspension one order frequency response velocity vector diagram The simulation results shows, the new design rubber mounting's Structure and mechanical meets the performance of engine matching requirements, and this suspension of mechanical properties within the ideal range of engine. 4 Pre and post improvement engine mounting compared to the test results Using the same method, test the improved engine mounting acceleration frequency response characteristics in all speed range, conversion of transmissibility curves, and compare with the pre improved transfer rate curves, results as shown
The new design rubber suspension was studied by 3D numerical simulation, results shows that the new design rubber mounting's Structure and mechanical meets the performance of engine matching requirements. 3) The new design rubber suspension has been loading test, and compared with the original test results.

Simulation analysis of motor temperature rise was carried out under different inlet flow.
In this paper, three-phase synchronous motor was adopted for simulation.
The Simulation Analysis The Influence of Radiating Rib Number on Motor Temperature Rise.
Summary Finite element software is very intuitive and accurate in the motor thermal simulation.
CFD Analysis of Cooling Jacket Flow Heat Transfer on Vehicle Engine .vehicle engine, Vol. 03 (2010)pp 50-55.

Alansari1,d 1Mechanical Engineering Department, Faculty of Engineering, University of Kufa, Iraq 2Chemical Engineering Department, Faculty of Engineering, University of Kufa, Iraq 3Mechanical Engineering Department, Faculty of Engineering, University of Baghdad, Iraq anasra.hamood@uokufa.edu.iq, bAlia.alshammary@uokufa.edu.iq cdrihsan@uobaghdad.edu.iq, dLuays.alansari@uokufa.edu.iq Keywords: Clinker, Cooling Process, Forced Convection, Porosity, CFD.
They studied the effects of air clinker height ratio and porosity of clinker using CFD modeling by (FLUENT 6.3.26).
Hesham, Variation of Feed Chemical Composition and Its Effect on Clinker Formation–Simulation Process.
Xie, Optimization and simulation of sinter cooling process, CIESC Journal, 62 (11), 3081-3087, (2011)

., LTD, Shanghai 200040, China alanchen@usst.edu.cn Keywords: Rotary press; Feeding wheel; Powder flow; Simulation Abstract.
Computational Fluid Dynamics (CFD) Simulation.
In the simulation, except for the former wheel speeds, two more speeds, 50 rpm and 55 rpm, were considered as well.
Due to the lack of suitable apparatus to measure the powder flowability in a narrow moving space, numerical simulation is an effective means to study the process.
It is logical to expect that the numerical simulation would be helpful for designing the feed shoe and selecting the operating conditions.

., Tokyo University of Science, Yamazaki 2641, Noda, Chiba, 278-8510, Japan Keywords: FEM, Adaptive Analysis, Local Mesh Refinement, Hexahedral Mesh Generation Abstract. 3-D finite element method (FEM) is widely used as an effective numerical simulation technique.
In the simulation technique, accuracy is one of the most significant issues.
Adaptive mesh generation is highly required on CFD area.
Much work has been progressed for adaptive mesh generation for CFD, especially aerospace area.

Study of the Phenomenon of Water Hammer Based on Sliding Mesh Method Lanlan Guo1,2,a, Jie Geng1,b, Shuo Shi3,c ,Guangsheng Du1,d 1School of Energy and Power Engineering, Shandong University, Jinan, 250061, China 2Electromechanical College of Shandong University of Science and Technology, Qingdao, 266590, China 3Key Laboratory of Renewable Energy Utilization Technology in Building of National Education Ministry,Shandong Jianzhu University, Jinan, 250101,China agllgo@163.com, bgj_8944@163.com, cshishuo@sdjzu.edu.cn, ddu@sdu.edu.cn Keywords: water hammer; numerical simulation; sliding mesh; variable density Abstract.
In this paper, the methods of characteristic and sliding mesh are used to the water hammer simulation and be analyzed and compared.
Method of CFD Sliding Mesh.

China Keywords: Absorbing gas; Non-absorbing gas; Free convection; Solar radiation Abstract This paper presents a radiant model based on the radiant resistance analysis theory and the results of numerical simulations of double glass window.
Introduction of CFD model Considering a vertical double glass window heated by solar radiation and higher outdoor air temperature, the paper discusses a window system formed by two parallel glass sheets of 3mm thickness and area, separated by a distance of 8mm and 10mm respectively, filled with two kinds medium, air and CO2 respectively.
To compare the heat transfer due to natural convection and solar radiation, numerical simulations are realized to solve the equation of energy and momentum using the CFD.
The numerical simulation takes into account the physical phenomena in the heat and flow processes and also the real boundary conditions while in normal operation.
Manz, Numerical simulation of heat transfer by natural convection in cavities of facade elements[J], Energy Build, 35 (2003)305–311

Sometimes, such a software allows simulation and highlighting the behavior of the product during its use.
We can start the simulation and calculation of stress.
As a result, we get a lot of simulation outcomes and indications.
Today, many leading corporations of the world consider that they must have simulation and design software from ANSYS.
It first realized innovations such as performing analysis on a personal computer (PC), integrated problem solving fluid dynamics (CFD) and a multi-purpose package for solving complex problems in physics and mechanics.