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Then, the GAHE-PCM simulation was verified by contrasting its outcomes with the data from the simulation developed by Zhou et al. [4] in Chongqing, China.
Building upon the GAHE numerical model of Brum et al. [13], used in several works in the literature [2, 3, 14], in the current research a numerical simulation of GAHE-PCM was constructed within the ANSYS Fluent program, with the simulation region illustrated in Fig. 2.
For the initial condition, the simulation region was established at the mean annual ground temperature of 18.7°C.
Simulation duration for the current study was 2 years.
Wilcox, Turbulence Modeling For CFD, third ed., DCW Industries, California, 2006

Simulation Model Research Method.
The simulation cases include Case1~6, which could be elaborated as follows: Mode 1.
(2) The mathematical model of FDS: FDS is basically a LES (Large Eddy Simulation) based CFD modeling software applicable to 3D fire simulation.
The impacts of the various simulation parameters on the time allowed for people’s escape are listed as follows.
The impacts of the various simulation parameters on the time allowed for people’s escape are listed as follows.

This undesirable phenomenon is typical of the CDS for convection-dominated transport conditions and is an issue quite familiar to the computational fluid dynamics (CFD) community.
Figures 3 and 4 presents some results of the numerical simulation for a plane surface of length L.

First, get the air-cushion type flow box integrate with the mechanism and experiment method, as the model of controlled plant during simulation process, then utilize the diagonal matrix method which is commonly used in the design of decoupling controller Take two-variables control system for example, suppose G11（s），G21（s），G12（s），G22（s）were K11G11，K22G22 and D11（s），D21（s），D12（s），D22（s），are decoupling machine，In order to work out the mathematical model of decoupling device, write the system transfer matrix Gs first, Yi and adjust the amount to be transferred between the amount of matrix ui （13） Matrix between regulation and regulation is: （14） The (14) into (13) yields the system mass matrix
Flow Control and Optimal Shape of Head box Using CFD and SMOGA [J].

For simulation & analysis of the Impeller, a Large Eddy Simulation could be done to validate the flow in cavitating & non-cavitating conditions (Nobuhiro Yamanishi, 2003). 3.2 Pumps The pump is the assembly of the volute casing & the impeller inducer.
Cfd Simulation Of A Turbopump Inducer. 39th Aiaa/Asme/Sae/Asee Joint Propulsion Conference And Exhibit.

Many studies have shown that aerodynamic loss of converging slot-hole is low, film covering a wide range in the upstream region, high cooling efficiency, but because of the existence of processing technology difficult problem, at present only at the simulation stage, has not yet formally put into use.
The cylindrical hole, forward diffused hole and the crescent hole are studied by numerical simulation in the use of commercial CFD software FLUENT at the blowing ratio of 0.5 and 1 of the cases.
Fig.4 Configurations of crescent hole Fig.5 Average film cooling effectiveness of different holes at downstream Research on other new film cooling structure With the development of new efficient gas film cooling holes extensively, Kusterer et al. [18] presents a double jet film cooling way in 2006, pass structure of double jet by two opposite circular composite angles and the numerical simulation results show that the arrangement of double jet special makes jet and mainstream interaction a pair of the reverse kidney shape vortex, inhibition of jet and the wall of separation, improve the film cooling effectiveness, as shown in figure 8.

Fig. 5 shows their CFD and experimental results in which the oblique shocks moved towards lip with large scope obviously, after the MHD interactions.
Macheret’s simulation studies[17], Vatazhin’s theory analyses [18], Kuranov’s calculations [19], proved MHD control for improving shocks structure, enhancement of capturing and compression ratio under off-design Mach. 2.2 Near surface flow control When compared with large scale flow control, the near surface flow control aims at local issues, which is easy to demonstrate, and requires relatively low magnetic intensity, facility power and volume.

Simulation Analysis for Reasons of Energy Saving The conditions of the model are showed as follows： room 8×12×3m3, environment temperature 35°C, set temperature 26°C, 24 workers in the room.
Through CFD (Computational Fluid Dynamics) analysis, the layout of inner temperature fields of local air-conditioning and new air- conditioning systems in cooling conditions and with different numbers of workers can be obtained: Fig. 3.

Program is somehow an inter-stage between simple calculations on the basis of empirical relations and modern simulation methods on the basis of CFD.

Soultanzadeh, Numerical modeling of the air permeability of knitted fabric using computational fluid dynamics (CFD) method, Fibers and Polymers. 18 (2017) 1804-1809
Gutauskas, Simulation and application of the behaviour of a textile fabric while pulling it through a round hole, Fibres and Textiles in Eastern Europe. 11 (2003) 37-41