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Simulation of the flow field.
Equipment flow field simulation with a rotator speed of 150r/min is performed on commercial CFD software Fluent6.3 [6-8].
(2) Simulation study on the flow fields was finished by software Fluent6.3, and the mechanism of the excellent sorting property was elaborated
Modelling and Simulation of Gas-Liquid Hydrodynamics in Mechanically Stirred Tanks.
Numerical Simulation of the Two-Phase Flow in Axially Stirring Vessl.

The optimized building arrangement can be realized through simulation with application of CFD and ECOTech software.
Besides, according to the sunshine environment simulation, the position and form of public open space can be planned to provide healthy and comfortable outdoor activity space for inhabitants.
Through the analysis of wind pressure simulation and wind vectorgraph simulation, adequate wind pressure could be created between the front and back of each residential building through adjustment of building arrangement.
CityGreen, a simulation assessment software, can be used to assess the greenery eco-benefit of the original site of the residential area as guidance for planning of the greenery system, and also to simulate the eco-effect of greenery system in planning.

Based on the numerical simulations, the average temperature variety during the daytime and night was simulated and compared for the room with and without the device, respectively.
Numerical Simulation In order to research the average temperature of the room showed in Fig.1 with the device, the numerical model was set up.
The CFD software is used to simulate the average temperature change of the rooms according to the different conditions in the day and night.
The simulations for the average temperature Taverage of R-A and R-B during the daytime are done, as is show in Fig.6.
(4) The temperature conditions applied in the simulations and experiments are suitable for regions with large ΔTDN.

Results and Discussion The finite volume method is used to discrete the above equations based on the computing platform of CFD (computational fluid dynamics) commercial software FLUENT.
The veracity of the mathematical model and simulation method has been proved in previous studies[7].
The numerical simulation only calculates the solidification process of the miscibility gap that calculates from the initial temperature of single phase area to the temperature of the monotectic reaction (930K), and select the representative simulation results to analysis.
Diefenbac: Materials Science and Engineering R,Vol.15(1995)No.7-8,p.263 [11] Z.Z.Han,J.Wang: FLUENT - Fluid Simulation Calculating Examples and Engineering Application(Beijing institute of technology press, China 2004 ) [12] R.J.
Ratke: Modelling and Simulation in Materials Science and Engineering, Vol.6 (1998) No.2,p.123

We make the landscape visibility analysis of core areas including the Central Administrative District, the Central Business District (refer with: Fig. 3), and the History Memorial District in the program, with 3D simulation and data analysis to identify factors affecting visibility spatial form, such as building volume size, spatial layout compactness, open space sparse density, and thus to improve the visibility of the core area of the landscape by optimizing these spatial elements. 2) Optimization of the program: the simulation of urban physical environment based on BIM Based on BIM model of urban space, it loads the external environment data for simulation analysis of the physical environment of the program through BIM ecological analysis platform, including lighting environment perception, thermal environment perception, and acoustic environment perception in the natural environment of urban space, and then it makes the accumulation of data and comprehensive evaluation to provide
The spatial morphology and analysis of 3D visualization of the Central Business District a. the Acoustic environment perception We select urban space of the Central Administrative District for simulation and evaluation, analogizing the actual impact to the surrounding buildings of noise pollution and collecting data through the survey.
(refer with: Fig. 5) c. the Thermal environment perception In the program, we make use of the fluid computational mechanics (CFD) software of BIM and focus on the wind environment simulation of the urban residential district and the administrative district .
Combined with meteorological data, we make simulation analysis and comprehensive evaluation of the thermal environment, and then give the most reasonable space layout recommendations for the overall layout of the planning, the spatial relationship of the buildings, to make the built environment able to provide the maximum human comfort, at the same time consume the least energy.

This paper using Airpak software，simulation air distribution of wall hanging air-conditioning under different air supply angle and different air supply velocity running at refrigerate condition，and select the best air supply parameters by compare the thermal comfort.
In Chinese：Numerical simulation of the air flow in a room with low-temperature air distribution[J].
In Chinese：Numerical Simulation on Effects of air distribution to indoor air environment [J].
In Chinese： Numerical Simulation to the Effect of Airflow Distribution on Air Environment of Air- conditioning Room[J].
A zero-equation turbulence model for indoor airflow simulation [J].

When i=2， )/2cos(22 cfd r ufe p jrjkr π ρ δ α + = +−−
Directivity analyze Title of Publication (to be inserted by the publisher) MPA Simulation Fast Algorithm.
In this paper, the fast algorithm indicated in reference [2] will be assumed for the theoretical calculation and simulation of the elements of the array of sound field.
This algorithm is easy to be realized with the help of computers and can greatly reduce the time for simulation.
Simulation.

In Section 3, numerical methods for the simulation are given.
A study of Mach 0.75 jets and their radiated sound using large eddy simulation, AIAA-2004-3024
Steger, On implicit finite-difference simulations of three-dimensional flow, AIAA Paper 78–10, 1978
Kolbe, New insights into large eddy simulation, Fluid Dyn.
Lyrintzis, Surface integral methods in computational aeroacoustics – from the (CFD) near-field to the (acoustic) far-field.

From the simulation results, it was found that tire width has a noticeable effect on tire-pavement noise.
Tire-Pavement Noise Simulation Model Fig. 1 shows the geometry of tire pavement noise simulation, which consists of two sub-models: the tire-pavement interaction sub-model and the near-field sound propagation sub-model.
However, for a proper simulation of sound, air compressibility must be considered within the large eddy simulation (LES) model.
Sagaut, Large-Eddy Simulation for Acoustics, Cambridge University Press, Cambridge, 2007
Zhang, A mesh adaptivity procedure for CFD and fluid-structure interactions, Computers Structures, 87 (2009) 604-617

Numerical Study on Combustion Performance Comparison of Premixed Methane-air in Micro-combustors with and Without Heat Recirculating Channel Tang Aikun , Pan Jianfeng* , Shao Xia , Liu Yangxian School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu province, China * Corresponding author, mike@ujs.edu.cn Keywords: Methane-air, Heat recirculating, Micro-combustion performance, Numerical simulation.
Combustion characteristics both in heat recirculating combustor and single-channel combustor are analyzed which containing the flame shape, location and temperature at the same simulation conditions.
The simulation adopts a skeletal mechanism of methane-air gas phase reaction which has 16 species and 25 reversible reactions[7].
Combustion characteristics and flame stability at the microscale: a CFD study of premixed Methane/air mixtures.
Numerical simulation study of premixed hydrogen-oxygen combustion process in micro-scale rectangular channel.