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The high-order schemes have attracted more and more attention in computational fluid dynamics (CFD) simulations.
The high-order schemes have attracted more and more attention in CFD simulations.
As a kind of combination schemes of WENO[3] and CS[4], a series of WCNSs [5] were proposed by Deng et al. based on weighted technique, and have been widely applied in large eddy simulations[6], direct numerical simulations[7] etc.
However, it is a problem to efficiently parallel the high order viscid compressible CFD simulations based on multi-block structured grid on GPU, due to the high computational and communicational requirements.
The benchmark simulations use 3 kinds of mesh.

For indoor substation, three-dimensional simulation of air distribution was conducted by using Computational Fluid Dynamics (CFD) method.
With the aid of CFD method, relevant analysis and study were conducted on indoor ventilation & cooling of industrial building with residual heat in reference [6].but there were only a few studies using CFD numerical simulation means.
Using CFD numerical simulation technology to carry out numerical simulation studies on ventilation & cooling air distribution for indoor substations and to assist optimization design of substations will be a new trend.
(2) Numerical simulation results of the ventilation design applying CFD calculation was consistent with the design calculation, and the calculation accuracy met the design standard.
Simulation research on three DOF motions of ship in oblique waves based on CFD [J].

Numerical Simulation of Ignition of Coke-oven Gas on an Industry Boiler Hongwei Shi1,a , Shuai Wang1 ,Dong Wang1,Xingkai Zhang1 ahongwei.ouc@163.com 1State key lab of multiphase flow in power engineering, Xi 'an jiaotong university,Xi’an,710049,China Keywords: Numerical sumulation ,CFD, finite-rate/eddy-dissipation Abstract：Some coking plants discharge coke-oven gas to the environment,this pollute the air.In order to solute the problem,the paper proposed a method:using coke-oven gas instead of light oil to ignite the boiler.The virtue of doing this was to save energy.Using FLUENT software package to simulate ignition in boiler is a effective mean,it can show the distribution of temperature in the furnace.The simulation result shows that using CFD methods can provide ideas for the operation of the boiler. 1 Introduction Numerical simulation is an effective method for boiler ignition,it can forcast the situation of combustion in furnace.In fact it is difficult to do experiment
for an operating boiler,if to do so the expense of the experiment is high,while the cold test involves some tests,so numerical simulation shows the superiority.
Using FLUENT software package to simulate combustion of coke-oven gas,there are three models:Finite rate chemistry model,Comprnents of hybrid/PDF model and laminar flamelet model. 2.2 Grid generation and simulation method Using pre-processing software of FLUENT ICEM generate O-grids,the grids were shown in figure 1 and figure 2.The grid quality confirm to the requirement of calculation.It can see that the mesh contains 827640 nodes Figure 1 The whole grids of boiler and nodes of mesh Using pre-processing software of FLUENT ICEM generate O-grids[2],the grids were shown in figure 1 and figure 2.The grid quality confirm to the requirement of calculation. 2.2 Numerical result and discussion 2.2.1 The temperature field in firnace The wideth and length of the boiler are 6225mm and 4275mm respectively,the height of the operation flat is 6000mm,the actual height of the furnace is 36000mm,here the simulation cannot conclude coal combustion,so height of the simulation part is set
to 12000mm.The distance of two layer gas guns is 1275mm.The furnace is symmetrical,so the simulation is half of the furnace.
References： [1] ANSYS FLUENT 14.0 User’s Guide,ANSYS Inc [2] ANSYS ICEM CFD 14.0 User’s Guide,ANSYS Inc [3] Che de fu,Zhuang zhengning,Li jun,Wang dong.boiler[M].XIAN: Xi 'an jiaotong university press,2004[In Chinese]

This research was carried out to develop a CFD simulation model for simulating the transmission of contaminants via soil's multi-porous medium Consisting of four real porous media used from Iraqi soil, representing the sand, sandy gravel, organic, and calcareous soil.
To explore the process of transferring pollutants inside the porous medium, a physical model and simulation model were built and executed with the aid of CFD programs using COMSOL 5.4 software to investigate the transport of pollutants via porous material.
Computational Fluid Dynamic Simulation Models The CFD technique was used here to investigate, comprehend, and forecast the water flow process of contaminating transport.
BASED ON THE STATISTICAL INDICATORS, THE SIMULATION MODEL CFD BY THE COMOSL PROGRAM SHOWED GOOD COMPATIBILITY AND CONVERGENCE WITH THE MATERIAL RESULTS AND THEREFORE IT CAN BE RELIED UPON IN SOLVING MANY ENVIRONMENTAL PROBLEMS WITH LITTLE COST, EFFORT AND TIME.
Experimental And Cfd-Simulation Of Pollutant Transport In Porous Media.

The verification has been compared by mass flow rate between experiment data and CFD simulation.
The verification of mass flow rate from measured data and CFD simulation was performed as shown in Fig. 2(b).
Fig. 4 Variation of volumetric efficiency versus rotating speed Fig. 5 shows the pressure distribution of scroll expander under CFD simulation.
This study includes experimental testing and CFD simulations to investigate the thermal-hydraulic behavior of expander.
Increasing accuracy of CFD simulations would be kept studying in the future.

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.

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 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.

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 simulation of a SCWO reactor containing a hydrothermal flame Lu Zhou1,2,a, Shuzhong Wang1,2,b, Honghe Ma1,2,c 1School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China 2Xi'an Jiaotong University Suzhou Academy, Suzhou 215123, China azhoulu.1987@stu.xjtu.edu.cn, bszwang313@yahoo.cn, cmahonghe@ stu.xjtu.edu.cn Keywords: supercritical water, hydrothermal flame, methanol, numerical simulation, EDC.
A supercritical water oxidation (SCWO) reactor containing a hydrothermal flame as heat source is simulated by computational fuild dynamics (CFD) simulation.
CFD simulation is a useful tool for the study of mixing process, fluid dynamics, and chemical reaction, and especially suitable for the simulation of combustion process within the SCWO reactor.
To further explore the properties of hydrothermal flames in SCW, a CFD simulation of the reactor at ETH [2] has been conducted in this paper.
In this paper, CFD simulation is used to study the properties of methanol as the fuel.