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CFD Simulation of Muffler The pressure distribute inside the muffler is simulated with the commercial software.
The pressure loss of the original muffler is 12.11Kpa with the method of CFD simulation, which is fit the experiment data.
It is clear that the simulation model and the boundary condition are correct.
CFD Simulations have been used to optimize the structure of this muffler.
With the correct simulation model and the boundary condition, the CFD method can be exploited to research some further problems.

The numerical simulations have been conducted using the CFD code – ANSYS Fluent.
Kuhn et al. [7] have conducted two-dimensional numerical simulation using CFD code – Fluent to investigate the hydrodynamics in a horizontal MOCVD reactor.
All simulations were conducted using the commercial CFD software ANSYS Fluent 6.3.26.
A computational fluid dynamics (CFD) code FLUENT [9] has been used for numerical calculations under various simulation conditions, includes fluid flow, concentration and temperature fields.
Conclusion Numerical simulations of the deposition of Cadmium Telluride in an in-line MOCVD have been conducted using CFD code -Fluent.

The analytical results were compared with the wind tunnel test data, it was shown from the study that the results of CFD simulation was good agreement with that of the wind tunnel test.
In this work, the aerodynamic performance of a long-span suspension bridge with a 1418m main span in China was studied, the static wind loading coefficients of the bridge during erection were investigated through wind tunnel test and CFD simulation.
Fig. 2 1:50 scale section model in wind tunnel (a) In body coordinate system (b) In wind coordinate system Fig. 3 Static wind loading coefficients of deck during erection CFD simulation of the static wind loading coefficients Governing equations.
It can be noted from the study that the results of CFD simulation were agreed well with the wind tunnel test data, it is possible to calculate the static wind loading coefficients of long-span suspension bridge through CFD simulation.
With the help of the results of CFD simulation and wind tunnel test, the optimal aerodynamic shape of the deck of long-span suspension bridge can be obtained.

In performing CFD simulation, selection of the appropriate model is important by taking into account the computation time and modelling accuracy.
Simulation was performed using open source CFD software called OpenFOAM.
Conclusion A CFD simulation of a wind-induced ventilated building with single-sided opening is studied using RANS with standard k-ε model in this paper.
Best practice guideline for the CFD simulation of flows in the urban environment.
CFD simulations of natural ventilation behavior in high-rise buildings in regular and staggered arrangements at various spacing, Energ.

George et al. [4] used CFD for numerical simulation analysis of the exhaust system of buildings, so as to simulate the distribution of the flow field and temperature field, smoke pollution, and CO concentration when a building was on fire, in order to design an effective smoke exhaust system for buildings.
The abovementioned literatures show that the CFD method is regarded as an effective and convenient tool for obtaining the air flow field and temperature thermal field modes from computer numerical simulation.
The Airpak CFD software is professional analysis software for engineers, architects and designers.
The simulation analysis was carried out in two parts.
The thermal control analysis and flow field simulation of a building can be simultaneously implemented using the CFD numerical simulation analysis technique. 2.

CFD provides a new method to solve the problem.
In this work, we chose a common simulation method in CFD, which is Reynolds Average Navier-Strokes [3].
Water and air are both involved in ship CFD simulation.
However, due to the diversity of shipping lines, CFD method can only provide simulation results to specific object.
[3] WU Ming, SHI Ai-guo, YANG Bo, Simulation Research on Three DOF Motions of Ship in Oblique Waves Based on CFD [J], Application Research of Computers, 2013,(5).3 [4] M.Hanif Chaudhry, Open-Channel Flow [M], Columbia, Springer, 2008

CFD Based Study of Hydraulic Performance of an Air-conditioning Drainage Pump Nie xin1, a, Yang Dingguo2,b 1School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018,China, 2School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018,China, axin_nie2000@163.com, byangdingguo130@163.com Keywords: .Air-conditioning drainage pump, Hydraulic Performance, Noise, CFD simulation Abstract: This paper introduces a minor drainage pump used in air-conditioning system.
And LES (Large Eddy Simulation) is taken to catch the pressure fluctuation in the flow passage.
CFD results show that pressure fluctuation is the main sound source in the pump.
Usage of a relatively high density grid has the strengths to get reliable results by CFD.
Study on Numerical Simulation Method of Flow-induced Noise in a Centrifugal Pump[D].

The CFD results provide guidance to improvement of design efficiency and energy utilization. 1.
With the development of CFD technology, CFD simulation method is applied frequently in pneumatic and acoustic performance study of fans in vehicle cooling, electronic components cooling [[] Cao Yuntao, CFD Analysis and Optimization Design for Engine Cooling Fan Performance of Heavy-duty Truck.
MA thesis, 2009, Ji Lin University. ,[] Tang Yongwei, Study on Aerodynamic Performance and Aero-acoustic Performance of Engine Cooling Fan.MA thesis, 2006, Ji Lin University. ] and tunnel ventilation system [[] Yuan Fengdong, You Shijun, Gao Lijiang, Simulation of Axial Fan in Subway based on CFD, J.
The hub diameters used in the simulation are 400mm, 500mm, 600mm, 700mm and 800mm.
Conclusion In this paper, the simulation of variable hub ratio and variable blade number are conducted through the numerical simulation method.

The results in the simulation offer valuable information’s of the flow field in the throttle assembly.
This paper investigate the performance of the throttle assembly and evaluate the flow field through CFD simulations.
CFD simulations can contribute to the understanding of three-dimensional flow of the throttle system and provide detailed information.
Structural analysis was realized based on the values obtained in CFD simulations.
Jagadale, Numerical Simulation of Steady Flow through Engine Intake System Using CFD, IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 1 Ver.

Computational Simulation of Multi-product Flow in an Oil Transportation Pipeline Shian GAOa*andChimaobiDENNARb Department of Engineering,University of Leicester, Leicester LE1 7RH, UK asg32@le.ac.uk,bcd127@le.ac.uk *Corresponding author Keywords:CFD model, VOF,Pipeline, Interface.
Operational data from the Nigerian National Petroleum Corporation was obtained to validate the results from the simulations.
The results obtained from the CFD simulations are verified from the production data and previous theories developed on this subject matter.
CFD Models The CFD approach uses the Navier-Stokes equations, as given below in the general form, to calculatethe velocity and pressure of fluid flow of the system
Simulations were run for 5000 time steps at every 0.001 second.