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And a field test was conducted to confirm the simulation results.
The indoor temperature field, velocity field and PMV distribution with both original and reformed fan were simulated by CFD software and also a field test was conducted.
Computational Fluid Dynamics Simulation Physical Model.
Simulation and Analysis There are four simulation cases presented as shown in table 2 in this paper.
Vol. 56(2012), p. 419 [12] Fujun Wang: The computational fluid dynamics analysis– CFD software applications and principles (Tinghua University Press, Beijing 2004).

Keywords: Helical inlet port, Port deviation, CFD, Flow characteristic Abstract.
Based on the validation of CFD precision by test, the numerical simulation of flow characteristics in ports-valve-cylinder system is carried out.
This paper investigated the influence of inlet port, structure parameters and their deviation on the performance of the port by use of CFD.
The mass flow test results agree well with that of simulation in all valve lift.
Output Contrasts between Simulation and Test Table 1 Contrast of Port Performance Parameter between Test and Simulation Stable flow test Numerical simulation Error Mean swirl ratio 2. 04787 2. 11228 3. 14% Mean flow coefficient 0. 29357 0. 29133 0. 76% Different Versions of Manufacturing Deviation Axial Deviation of Inlet Port The phenomena of axial deviation of inlet port is mainly caused by the sand core floating during casting.

Research developed by the experimental research method with CFD simulation to meet the need for air changes.
This data will be used as input data in CFD simulation.
Simulation.
After the simulation between the openings and the design of the hybrid system is done, followed by extensive simulations with openings in various room volumes.
CFD simulation shows the condition of indoor air movement, ie the movement, distribution and velocity.

Focus of the investigation was on an ammonia-water absorption chiller for medium temperature food refrigeration with cooling capacity 12.8 kW involving simulation on the modification of test facility using CFD-Fluent software (CFD = Computational Fluid Dynamics), numerical simulation of solar energy applied on the system, environmental impact and economical aspect analyses.
Simulation of a parabolic trough collector, only direct radiation was considered.
The value of this parameter was obtained from the CFD simulation of 1.81 GJ/day.
Another parameter is average daily amount of heat transfer fluid circulated to the chiller which has been calculated by using the optimum mass flow rate from CFD simulation of 0.9 kg/s (77,760 kg/day).
This temperature, simulated in CFD, was found to be 180oC.

Optimizing Research on the Clad Façade of a High-rise Building using CFD Method Yuan Lei 1, a, Shao Lili 1,b and Xu Xuesong2,c 1 Department of Architecture, Shenzhen University, Guangdong,China 3The Institute of Architecural Design & Research, Shenzhen University, Guangdong,China ayuanlei@szu.edu.cn, bshaolili0420@163.com, cxx_song@126.com Keywords: CFD, natural ventilation, temperature distribution, U-value, SHGC Abstract.
Using Airpak as CFD tool, the study simulates and analyses how the openings and thermal characteristics of the clad façade work on the distribution of temperature and ventilation in the atrium of a high-rise building in Shenzhen.
(See Fig. 1) Fig. 1 Model of the building used in simulation Although there is no roof on the top of the atrium, most part of the atrium are enveloped by the clad facades, which results in climatic buffer spaces for the inner rooms.
Study scheme In the study, CFD (Computational Fluid Dynamics) simulation is used as the tool of analyzing and comparing thermal environment of the atrium with different openings and glass types.
The time is set to 15:00 on July 10th in the simulation, since it represents almost the hottest time of the year in Shenzhen; then, solar radiation intensity is calculated automatically.

Performance Improvement on Axial-Flow Fan by imposing Proper Frame Ribs Sheam-Chyun Lin1,a, Fu-Yin Wang1,b, Cheng-Ju Chang1,c, Hung-Cheng Yen2,d, and Yung-Jen Cheng2,e 1National Taiwan University of Science and Technology, Taipei, Taiwan 2Industrial Technology Research Institute, Hsinchu, Taiwan asclynn@mail.ntust.edu.tw, bD9703302@mail.ntust.edu.tw, cD9603301@mail.ntust.edu.tw dBrianyen@itri.org.tw, eeric_cheng@itri.org.tw Keywords: Axial-Flow Fan, Frame Rib, CFD simulation, Hydraulic Efficiency, System Resistance.
Therefore, this study intends to investigate the geometrical parameters of the frame rib systematically by using an integrated scheme, which consists of numerical simulation, mockup fabrication, and experimental verification.
Design Alternatives and CFD Results It is important to obtain the fan impeller generating low noise and high performance.
Star-CD is a commercial CFD code, which solves the Navier-Stokes equation using an unstructured finite-volume-method [7].
The result indicates that experimental performance agrees to that of numerical simulations on both maximum volumetric flow rate and static pressure.

Simulation on velocity field of gas-solid flow in the abrasive air jet nozzle was studied by the computed fluid dynamics(CFD) software.
With the development of computer technology and computed mathematics, the CFD software was developed.
But so far a little research on the simulation of abrasive air jet has been carried out and more attention has been paid to the simulation of abrasive water jet.
Mabrouki [2] have analyzed the interaction between the water jet and elastic-plastic material by CFD software.
The following are the two equations used by CFD software [4].

Analysis of a New Ventilation Flow Filed of Ultraviolet Cross-linking Irradiation Box Yiping Lu1, a, Zicheng Jin1, Jiade Han1, Bo Huang1, Guangping Hao1 1School of Mechanical and Power Engineering, Harbin University of Science and Technology, Xuefu Road 52, Harbin150080, China aluyp2010@yahoo.com.cn Keywords: velocity field; pressure field; CFD numerical simulation; irradiation box Abstract.
Then the 3D solid model of the irradiation box was established and the numerical simulation of turbulent flow field was performed due to the principle of Computational Fluid Dynamics (CFD).
After that, the numerical simulation of the new program was performed on the basis of Computational Fluid Dynamics (CFD) principle.
After all the work above, the numerical simulations of the new program were performed.
The numerical simulation results show that the distribution of velocity around the cable is uniform.

Numerical simulation results indicate that using RANS equations can better forecast hydrodynamic performance of catamaran planing vessel at high speed, which provides a practicable numerical method for optimization design of the catamaran planing vessel’s hull.
Introduction Numerical simulation is becoming a common way for assessment of ship performance in the early design stages,especially in the case of high—speed vessels .Restrictions in simulation and data probing, expenses and scale effects of experimental analysis are good reasons to employ a numerical tool as a part of ship design procedure.In 2003 Azcueta etc [1] numerically simulate a high speed planing vessel (Fn = 4).
In this paper, a numerical prediction method of resistance performance of catamaran planing vessels is discussed based on the CFD technology.
Steady and Unsteady RANSE Simulations For Planing Rafts.2003
Practical CFD Simulations for Planing Hulls .2007

Simulation of the velocity field of gas-solid-liquid three-phase flow inside and outside the abrasive water jet nozzle was studied by the computational fluid dynamics software (CFD).
As the rapid development of computer technology and computed mathematics, a new subject on the flow and flow engineering-CFD becomes mature.
Many experts at domestic and abroad have used the CFD software to solve many problems which can not be solved by theory and experiment method.
The study on the simulation of the field of gas-liquid and solid-liquid two-phase flow inside and outside the abrasive water jet nozzle by using CFD software-Fluent have been carried out[4,5].
The simulation result of Fig.3 is the abrasive track in the nozzle.