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Three-dimensional Wind Field Simulation on the Two Typical Roofs of the Building Shuqin Liu1 ,Zhongguo Bian1 ,Yuanbo Cai2 ,Fang Zhao2 1.
This paper mainly analyzed the basic situation of three-dimensional wind field around the buildings with the theoretical analysis and CFD numerical simulation method.
This paper presented the wind flow condition around the flat roof building and pitched roof building by Computational Fluid Dynamic (CFD) technique, including the wind energy on building roof.
In this simulation turbulent flow equation adopted standard k-e model.
Fig.7(a) Wind velocity ratio for α=0° Fig.7(b) Turbulence intensity for α=0° 3 Conclusions CFD simulations for the cuboids buildings have been performed, and analyzed the wind energy of building rooftop at different roofs and different wind directions.

Numerical simulation of the natural ventilation in workshop with different air inlet openings Yaxin Su1, a, Xin Wan2,b 1 School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China 2 Wuxi City College of Vocational Technology, Wuxi 214011, China asuyx@dhu.edu.cn , bwanxin840207@163.com Keywords: natural ventilation; industrial workshop; numerical simulation; air inlet opening Abstract.
With the development of numerical simulation methods, computational fluid dynamic (CFD) modeling is widely used by many authors to study fully the natural ventilation process.
In this paper, the authors numerically investigated the natural ventilation in a workshop with heat sources based on CFD method.
Sketch of workshop Numerical model and simulation method.
Realizable k−ε turbulent model was selected for the CFD calculation after several trial calculations and comparison to related experimental data.

Computational Fluid Dynamics (CFD) simulation is an effective approach for increasing the efficiency of new CVD process development [1,2,3].
In our work, CFD simulations were used to determine the factors that are the most critical for arriving at optimal process conditions.
A commercial Computational Fluid Dynamics (CFD) software package was used in this work.
susceptor is reliably predicted by simulation.
Information provided by CFD simulations will be applied to reduce the number of experiments leading to optimization of the CVD homoepitaxial growth of SiC in other types of growth reactors.

Investigation on the Prestage of a Water Hydraulic Jet Pipe Servo Valve based on CFD Xinhua Wang a, Zhijie Li b, Shuwen Sun , Gang Zheng College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technology Bejing, China awangxinhua@bjut.edu.cn, bymhuli@163.com Keywords: water hydraulic, CFD, jet pipe servo valve, jet pipe amplifier Abstract.
The best combination of structure size is finally obtained by using numerical simulation, computer emulation and experiment analysis methods.
With the technology of Computational Fluid Dynamics (CFD) and the finite volume method, the analysis models of the pressure field and speed field of water hydraulic jet pipe servo valve are constructed[6].
The simulation results could play a great role in designing the jet pipe amplifier
(3) The simulation results also make it clear that it is feasible to use water as the working medium of servo valve instead of hydraulic oil.

A CFD model was created to simulate the fluid flow in the header and microchannels.
The results from these simulations are presented, and it is observed that the flow distribution is significantly affected by geometrical properties of the channel and the header.
The computational grids were obtained with the help of commercial CFD package GAMBIT 6.2.
[3] Zhe Zhang, YanZhong Li, CFD simulation on inlet configuration of plate–fin heat exchangers, Cryogenics. 43 (2003) 673–678
Lee, Direct simulation of fluid flow and heat transfer in periodic wavy channels with rectangular cross-sections.

Numerical Technique Numerical technique usually shortened as Computational Fluid Dynamics (CFD is the analysis of systems linking fluid flow, heat transfer and related phenomena such as chemical reaction by means of computer-based simulation.
Likewise, motor vehicle manufacturers now routinely predict drag forces, under-bonnet air flows and the in-care situation with CFD.
(5) CFD , is the analysis of systems linking fluid flow, heat transfer and related phenomena such as chemical reaction by means of computer-based simulation.
Based on its greater ability, simulations can be run under a wider range of wind speeds that too varying the angle of attack.
Numerical simulation of flow over twisted-blade, horizontal axis wind turbine.

,Ltd, Hangzhou, China 2 School of Mechanical Engineering, Hangzhou Dianzi University a lijf@weichai.com Keywords: Diesel Fuel Filter; Angle of Filter; CFD Abstract.
Computational fluid dynamics method was applied to diesel filter internal flow simulation, and flow pressure lost was test to verify the simulation result.
CFD result shown that, when the filter paper angle less than 3°, the internal flow resistance of fuel filter grown rapidly.
Simulation and test of flow process in air filter [J].
[4] Zhang Hui and Wang Guoli,the filter layer simulation parameters determine.

Stress of pressurizer surge line due to stratification is calculated with the help of finite analysis software, using both simplified temperature distribution and the temperature fields of CFD simulation result.
Thus, fluid field can be calculated independently and the CFD results are taken as the source of FEA of pipe solid.
To be accurate, the temperature field is computed by CFD method.
Although the temperature calculated by CFD method is more consistent with the reality, the computation takes too much time on stake.
Results from CFD temperature field.

For all simulation scenarios, the simulation time of the numerical model was set to 120 s to ensure a stable bed height.
Figure 2b shows a comparison between the experimental and the CFD bed heights within a flow rate range of 40-72 L/h.
CFD, Chem.
Xie, CFD Modeling and Simulation of the Hydrodynamics Characteristics of Coarse Coal Particles in a 3D Liquid-Solid Fluidized Bed, Minerals 11 (2021), 569
Grace, CFD Modelling of a Liquid–Solid Fluidized Bed, Chem.

The Computational Fluid Dynamics (CFD) can be described in a generalized way as the numerical simulation of all those physical and / or physic-chemical processes that have flow.
There are some researches about drying brick using CFD; however, the works involving industrial hollow ceramic brick are scarce [8-11].
Both geometry and mesh were constructed using ICEM CFD 15.0 software.
This behavior is due to the low convective heat transfer coefficient obtained in the simulations.
Simulation and experimentation of the drying of drained ceramic bricks.