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Fax: +86-10- 61772031 E-mail address: cqdong1@163.com Keywords: numerical simulation, grate combustion, dust removal.
According to simulation and practical experience, it is indicated that the mixing plays a key-role in the combustion of the furnance [5].
A commecial code FLUENT is used as the CFD solver [7].
The commercial code FLUENT has been employed to perform the simulation of gas flow in boiler.
Simulation has been performed to confirm the effectiveness of the device and the most favorable air ratio.

Analysis of solid-liquid two-phase flow in axial flow pump Hua Hong1, a, Wang Xiaolin2,b, Wang Huiyan3,c, Liu Xiaobing4,d 1,2,3,4 School of energy and environment, Xihua University, Chengdu 610039, China aHuahong126@163.com, bWxl@mail.xhu.edu.cn, c191758344@qq.com, dLiuxb@mail.xhu.edu.cn Keywords: axial flow pump, solid-liquid two-phase, turbulent flow, numerical simulation Abstract.
This research shows that the numerical simulation results are consistent with the actual situations.
Presently, CFD method has been used in researching three-dimensional turbulent flow field in a pump, some scholars have used CFD method to calculate multi-phase flow in pumps, and obtained some results [1-9].

The Three-dimensional Unsteady Numerical Analysis of the Internal Flow Field of the New Control Valve Qu Dongyuea, Xu Jialeib , HuangYangyangc and Xie Xiaozengd College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China aqudongyue@hrbeu.edu.cn, bxujialei1991@126.com,chuangyangyang1314@yeah.net dxiexiaozeng@hrbeu.edu.cn Keywords: control valve; unsteady flow; numerical simulation; pressure fluctuation Abstract.
This paper take the new valve as the research object, by computational fluid dynamics (CFD) software, the numerical simulation of the internal steam steady state flow field of valve normal work a typical opening in the process of opening is made, and obtain the internal flow field visualization distribution and flow characteristics of control valve.
The current domestic study of control valve stay in level of conventional engineering imitation and prototype performance, few numerical simulation of unsteady flow in the valve, and abroad for the vibration of the control valve adopted a negative test method to solve, not from the viewpoint of fluid dynamics to study the unstable flow control valve.
Choice the total pressure and static export as its import and export boundary conditions in the process of numerical simulation.
So in the next will mainly proceed transient simulation of 10% opening under pressure ratio is 0.585.

NUMERICAL ANALYSIS OF MATERIAL TEMPERATURE DISTRIBUTION Muaffaq Achmad Jani Information Engineering Department, Faculty of Engineering University of 17 Agustus 1945 Surabaya, Indonesia muaffaqjani@gmail.com Keywords: material temperature, numerical analysis, simulation.
Simulations performed on the heat distribution PMMA and LiNbO3 crystal with thickness of 2 to 2.5 mm. 1.
The material used for the simulation is LiNbO3 with a thickness of 2.5 mm, Heat Transfer (h = 25Watt/m2°K).
Change of temperature The simulation of the temperature distribution in the material can be seen in Figure 3.
Informasi dan Komunikasi, Vol.2, No.1 (2006) [8] Yoges S and Eckehard S., Seventh International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia (2009)

This paper presents results obtained from the application of a computational fluid dynamics (CFD) code Fluent 6.3 to modelling of temperature in propane flames with air preheat.
Both experimental works and numerical simulation showed that increasing the temperature of the combustion air significantly increases the flame temperature.
In this paper, the application of PDF and EDM combustion modelling approach to the simulation of turbulent non-premixed propane flames with air preheat is presented.
Although Hjertager et al. [9] reported that the standard EDM model is not suitable for liquid-phase reactions; it has found extensive application in the simulation of turbulent reacting flows.
Solberg: CFD Modelling of Fast Chemical Reactions in Turbulent Liquid Flows, Computers and Chemical Engineering Vol. 26 (2002), p. 507-515 [9] I.R.

The simulation result of velocity contour is shown in Fig. 3.
The simulation results can be validated by experiment data provided by Leach et al. (1966).
The data obtained by simulation is useful for deciding lateral step between each trajectory.
The simulation results is consistent with experimental study in literature, hence, the proposed simulation methodology is helpful for predicting the flow behavior of jets used in WJISMF.
Numerical simulation of high speed turbulent water jets in air.

And finally the FLOTRAN CFD software is used to simulate the complex flow field and flow pattern according to the multiple reference frame method.
The advantages[7] of multiple reference frame is to achieve the whole numerical simulation of flow field in stirred tank, and not to need to have experiment; Secondly, it is a kind of steady algorithm ,with small workload.
Stirring reactor in computational fluid dynamics simulation technology progress [J].
Study on Numerical Simulation of the flow field and temperature field of polystyrene reactor [J], Petroleum and Chemical Equipment Technology, 2005，26(4): 44-49
Numerical simulation of flow field of Impeller Stirred Tank [J].

Simulations were performed with a radius ratio = 0.714.
To evaluate the heat exchange inside finned air-gap, computational fluid dynamics (CFD) is a powerful method to predict the complex flow problems, especially our case.
Grid Generation The mesh was created using ICEM CFD.
Before starting the simulation of the configuration of our study, several grids were tested in order to generate a good mesh.
Hudon, CFD analysis of turbulent convective heat transfer in a hydro-generator rotor-stator system, Applied Thermal Engineering. 130 (2018) 17–28

Previous researchers investigated on soot distribution in a diesel engine by using the CFD software, Kiva-3v.
Kiva-3v implements a two stage of Hiroyasu soot model in the simulation.
The data that were obtained from the Kiva-3v simulation were velocity vectors of the soot, fuel, temperature, pressure and others [6].
In this study, the drag force equation is included in the simulation to determine soot movement.
[13] Hong, S., Wooldridge, M.S., Im, H.G., Assanis, D.N. and Pitsch, H., Development and application of a comprehensive soot model for 3D CFD reacting flow studies in a diesel engine.

Nasif [3] developed L shaped heat exchanger and obtain its effectiveness by using CFD simulation.
Behnia, CFD simulation of air to air enthalpy heat exchanger, Energ Convers Manage. 74 (2013) 377–385.