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The result manifests that the employment of CFD simulation technology to hydraulic muffler can provide evident theoretical support for further development and study of hydraulic muffler, and is possible to lay a foundation for continuous studies of the hydraulic muffler.
In the CFD simulation process, the pressure periodic variation signal has to be achieved from the TABLE files
The Fluid Analysis of Rectangular Wave Signals’ CFD When the system gives out the rectangular wave signal as the input signal[5]-[6] as released in Fig. 3, the analytical results of CFD fluids will be as shown in Fig. 4 and Fig. 5.
Conclusion It can be indebted from the above fluid analysis on the basis of the rectangular wave input signals of hydraulic muffler, which helps to have a further understanding of the CFD fluid simulation function and lay a foundation for the further study of hydraulic muffler [7].
[6] Xiao-bing, Deng: A Study of the Uncondensed Large Eddy Simulation,Beijing: The Graduate Department of China Air Dynamic Researches and Development centers, 2008, p:47-68

Simulation using CFD is considered as one of the most suitable approaches for the prediction of critical parameters required to control efficient operation of coal combustion [10].
The completion of this study will show whether CFD simulation is capable to predict temperature, pressure, volume fraction and syngas composition inside a gasifier during LRC gasification.The aim of this study is (a) to determine temperature and pressure profile of Merit- Pila gasification simulation and compare them with experiment results.
CFD modelling of oxy-coal combustion in an entrainedflow reactor.
Three-dimensional CFD simulation of the system inlet and outlet boundary condition effects inside a high solid particle flux circulating fluidized bed riser.
Effect of ring baffle configurations in a circulating fluidized bed riser using CFD simulation and experimental design analysis.

The results show that the CFD model can be used as a tool for improve and optimize various part of the intake manifold flap.
Several prototypes of the model were realized and analyzed, using the process that implies the use of CFD programs, Fig. 1.
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.
Nasiritosi,“Intake manifold optimization by using 3-D CFD analysis”, SAE paper no. 2003-32-0073. page no. 1-5
[11] https://cfdninja.com/wp-content/uploads/2016/05/CFD-Process

Liquid Film Features Analysis on Mechanical Seals with Micro-pore Face by CFD Weizheng Zhang1,a, Shurong Yu1,b, Yan Wang1,c, Xuexing Ding1,d 1 College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China azhangweiz@163.com, byusr@lut.cn, civy132@163.com, ddingxx1@163.com Keywords: mechanical seals, micro-pores face, stiffness, CFD, numerical simulation Abstract.
This paper selected the film which was the type of cylindrical porous section contour line for CFD simulation.
This simulation conclusion was consistent with the theoretical data [7].
Fluid state analysis on flow field of gas seal with spiral groove based on CFD. [ J ].
Numerical simulation of computational fluid dynamics( CFD) of the micro-scale flow field in the spiral groove dry gas seals[J].Chemical Engineering＆Machinery, 36( 5) : 287－290.

CFD Simulation and Experimental Study on Solid-liquid Hydrocyclone Huang Si a, Yue Le b, Luo Li c School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China 510640 ahuangsi@scut.edu.cn, byl19870125@163.com, chezezhifu-001@163.com Keywords: hydrocyclone; solid-liquid two-phase flows; numerical simulation; experimental test.
This paper performs a simulation using CFD technique to predict the separation performance of a hydrocyclone and therefore to improve its efficiency.
Simulation Simulation model and mesh generation.
The simulation is performed by ANSYS CFX code.
The comparison between simulation and test results proves that the two-phase flow model and CFD simulation in this paper are feasible.

This work also deals with validation of calculated orifice diameter through CFD simulation for pressure drop in pipe line.
CFD simulation used to validate given orifice diameter was correct for given pressure drop.CFD Post software was used for post processing.
For evaluating the performance of CFD simulation, around 106 iteration were performed.
Results and Discussion Validation of orifice plate used in experimental setup is done through CFD simulation.
It is found that, the difference between theoretically calculated pressure drop value and CFD simulation result value is approximately same at distance in between 17D to 19D in downstream.

CFD-based Simulation of the Temperature Distribution in Multi-span Greenhouse with Warm Air Heating System Hengsong Jia Qian Wangb Zeyu Guoc School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212012, China ajihengsong@ujs.edu.cn, bqwang@ujs.edu.cn, cguozeyu106@126.com Keywords: Multi-span Greenhouse, Temperature Distribution, Experimental research, Numerical Simulation Abstract.
With the rapid development of CFD (Computational Fluid Dynamics), domestic and foreign scholars have conducted extensive research in the greenhouse microenvironment by means of the numerical simulation technology [1,2].
Simulation results existed some differences with experiment，but the tendency of temperature distributions was consistent, thus effectively of the CFD model was certified.
Thus it showed the validity of the built CFD model and the boundary conditions.
Montero, Esteban Baeza, A CFD greenhouse night-time condensation model Original Research Article, Biosystems Engineering. 111 (2012) 141-154

The conclusion can be drawn that the calibration of the relationship between flow and differential pressure with CFD is feasible.
The CFD-based flow measurement method, as a more simple and convenient way, can be applied in large-scale low-lift pumps.
The CFD-based calibration way was compared with the pump set test approach.
Patel: Numerical Model for Simulation of Pump-Intake Flow and Vortices.
Wang: Analysis on CFD Application in Water Pumps.

CFD Simulation Research on Flow Characteristics of Fluidized Beds Lining Han1, a, Lumin Wang1, b * 1 College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China, 066004 a lininghan135@163.com, b lmw@ysu.edu.cn Keywords: Fluidized bed; Two-fluid model; Simulation; Flow characteristics Abstract.
All of the numerical simulations will be performed with the commercial CFD package Fluent.
CFD simulation of fluidized bed In this work, the calculation domain was divided into structured tetrahedral computational cells.
As shown in Table.1, the CFD simulation values were slightly larger than the theoretical values.
Conclusions The maximum error of the pressure drop between CFD simulations and the theoretical data was 2.03%.

Research on windage power loss of spur gear base on CFD Ning Zhaoa, Qing-jian Jiab （School of Mechantronics,Northwest Polytechnical University,Xi’ an 710072 China） azhaon@nwpu.edu.cn, bjiaqj066@sohu.com Keyword: Windage, Power loss, Spur gear, Computational Fluid Dynamics (CFD), Oil-air mixture Abstract.
The paper established three-dimensional Computational fluid dynamic (CFD) model of the oil-air mixture in the gearbox after meshing by ICEM CFD simulated the turbulence model by the CFD.
And some investigator carried out studies on the windage losses of the spur gear and bevel gear using the CFD simulation [2-6], the result is agree with the experiment.
Reference [1] CHEN Shixuan The windage problem of the Aeroengine gear transmission system Journal of Aeroapace Power Vol.8 No.3 July 1993(in Chinese) [2] Investigations on CFD simulation for predicting windage power loss in spur gears.3rd International Conference on Integrity, Reliability and Failure, Porto/ Portugal, 20-24 July 2009 .Paper Ref: S0602_P0222 [3] K Al-Shibl, K Simmons, C N Eastwick.
The application of CFD to model windage power loss from a spiral bevel gear.