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Computer Simulation Environment was rarely used to analyze the indoor and outdoor environment.
In this case, we used the Computer Simulation Environment technology combined with regular design methods.
Fully-buried sewage treatment facilities can achieve the goal of zero discharge of sewage. 4 Computer Simulation Environment analysis 4.1 Evaluation of outdoor wind environment simulation Fig.3 The campus on the summer wind speed simulation vector diagram Fig.4 The campus on the winter solstice sunshine hours simulation diagram Fig.5 Overall daylight simulation on fourth floor of typical teaching building In order to examine how the layout form influenced the wind environment, the wind environment simulation is done by CFD (Computational Fluid Dynamics) software Phoenics 2009.
The outcome of the simulation shows that average sunshine hours were 4.38 hour per day.
The new campus is proofed to be with high quality of daylight in the classrooms. 4.4 Solar radiation simulation Fig 6.

Fig. 2 NOx emission curves under Fig. 3 Exhaust temperature change under Nitrogen-enriched condition nitrogen-enriched condition Simulation analysis of nitrogen- enriched engine performance In 2008, Jinjin Deng[11] analyzed the process of nitrogen enriched combustion and she used the simulation software GT-POWER to build the combustion model in order to simulation the enriched nitrogen combustion process.
Numerical simulation of nitrogen-enriched intake air in intake，compression and combustion process was performed with CFD software.
As shown in the figure 11, simulation results illustrate that upright straight intake generate tumble motion that the direction is opposite to the previous engine.
As shown in the figure 12, simulation results show that the special shapes combustion chamber can meet the requirements of the stratified air intake better.
Numerical Simulation Study of Nitrogen-richened Air Combustion Process and Emission in Diesel Engine.

The results of numerical simulation show that the roll motion has greater influences on the system comparing with sway and heave, the amplitudes of sway and heave are small.
Numerical simulation and analysis on the crane-system with a floating base The origin of the body-fixed coordinate system of the crane-system with a floating base shown in figure 3 coincides with the mid-point of the waterline when the floating base is still according to literature [13], theaxis points to the bow, theaxis points to shipboard, and theaxis points downward.
Tab. 1 The mass and dimension of parts in the crane-system with a floating base No. parts mass(kg) lengthwidthheight (m) ① wharf boat 250 ② counterweight 15 ③ crane-arm 5 ④ weight 10 The motion response and the force of the anchor chains of the crane-system with a floating base are obtained under conditions of wavelength and.The added mass coefficients (listed in table 2) and the damp coefficients (listed in table 3) under both conditions are calculated by use of CFD software.
Fig.8 The force of the anchor chains in sway Fig.9 The force of the anchor chains in heave Fig.10 The force of the anchor chains in roll Fig.11 The force of the cable Conclusions According to the simulation to the crane-system with a floating base under the action of waves, several conclusions can be obtained as follows: (1)The sway and heave displacement of the crane-system with a floating base increases with the wavelength, the sway and heave amplitude are small because of the action of the anchor chains and the water, and the heave amplitude is nearly zero
Dynamic Simulation of Crane Hoisting under the Action of Regular Waves.

With the convective heat transfer theory, numerical analysis of fluid-solid-heat coupling is implemented for the engine combustion chamber cooling structure based on finite element method and computational fluid dynamic method, thus to obtain valuable simulation results.
And it has been successfully applied to numerical simulations of two dimensional airfoil aerodynamics [12].
Numerical simulation and optimization on heat transfer and fluid flow in cooling ineering and Software, 2006, 23 : 907-921
Numerical aerodynamic simulations of a NACA airfoil using CFD with block-iterative coupling and turbulence modelling.

Han[4] released a new method that overcomes the computational difficulties associated with three-dimensional effects by using two-dimensional CFD and a neural network, and it was applied to the shape optimization of cut-off in a multi-blade fan/scroll system.
The studies above mainly focus on the fan blade optimization, and the influence of single impeller structural parameter on the fan performance, rather than establishing a simulation model with comprehensive effect of the key parameters.
The functions and commands above are encapsulated inside the program, and users only need to give the parameters required to get the corresponding numerical simulation model results.

One of the key problems in numerical simulation is to establish the structural model of large-span structures, which decides complicity of the process and accuracy of the final results.
As seen from figure 4, the simulation results are closer to those from ANSYS at wind azimuth 15° than 45°.
,Reveh, D.E., Development of unsteady aerodynamic state-space models from CFD based unsteady loads.

Finite Element (FE) simulations of the forming process were performed in this paper.
The trends shown by the simulation results are in good agreement with the experimental results.
Based on the computational fluid dynamics (CFD) method, a 3D model was built using a modeling software GAMBIT firstly and the thickness distributions under different process conditions were calculated using a calculator POLYFLOW.
Several simulations have been carried out.
The 3D axisymmetric simulation model Process Conditions.

Considering the hybrid ventilation, analysis on the indoor temperature distribution are depended commonly on field-measurement and numerical simulation.
D.Song described a concept of a hybrid cooling system using radiational panel cooling with wind-induced cross ventilation and investigated its characteristic using CFD simulation in an office setting.
Both experimental and CFD approaches were used for this purpose.
However, mechanism of the hybrid ventilation can not be described closely by experiment and CFD.

In 2000, Fu Xin used CFD method to research the fluid oscillation characteristics of swirlmeter in oscillatory flow, therefore he proposed the symmetric differential signal treatment method to resist the vibration.
On this basis, he proposed a new method to resist the interference of flow field pulsating which is based on phase discrimination, and obtained the simulation results.
Flow Measurement and Instrumentation.1999, 10: 183~188 [5] Fu Xin, Yang Huayong: Study on mechanism of hydrodynamic oscillation in vortex precession meter using large eddy simulation.

(a) rectangular acvity (b) streamlined acvity 1 (c) streamlined acvity 2 Fig. 2 Two-dimonsional simplified models of sensitive cavity of three structures Solve with Finite Element Method The FLOTRAN CFD analysis of ANSYS software is an advanced tool used to study two-dimensional and three-dimensional flow field, which can be used to analyze the movement of air in cavity [5].
This simulation typically comprises modeling, loading and solving
Wang: Numerical Simulation Technology of Practical Engineering and its Practice (Northwestern Polytechnical University Press, Xi’an 1999).