Search results

The final structure parameters were obtained by CFD numerical simulation optimization iterately.
Simulation results show that: The combination vortex pump meet the design requirements.
Numerical simulation and analysis The main geometric parameters of three stage combination vortex pump acquired in table 1.
Then CFD numerical simulation is carried out to optimize the structural parameters of the pump.
“Design and Simulation of Aero-engine High Pressure Centrifugal Pump,” Computer Simulation, vol.28, 2011 pp. 84-87

The CFD application is common in the FPSO design and verification.
Hu et al [9] used CIP in simulation.
Zhu R.C. [11] utilized the potential flow theory and CFD to provide a new numerical simulation method which can reproduce green water process.
From the numerical simulations and analysis of green water, we can find that CFD and FLUENT have been commonly used in numerical simulation of green water.
CFD technology could completely simulate the interaction of ship and fluid, but it is not time-saving without high accuracy and reliability.

In this paper, a 2-D numerical simulation of the wind turbine S825 airfoil is conducted with Spalart-Allmaras (SA) turbulence model at different attack angles.
As the spirit of RANS, turbulence model is one of the key elements and a weakness in CFD for engineering [3,4].
The Spalart-Allmaras (SA) turbulence model is widely used in engineering CFD due to its simplicity, robustness and efficiency [5].
When the attack angle is greater than 13 deg, the deviation between the numerical simulation and experiment is obvious because of the separation flow.
Conclusion Numerical simulation for wind turbine airfoil S825 is performed by CFD software Fluent 6.3.26.

The Effects of Nozzle and Workpiece Placements on Cooling Rate in the Vacuum High-pressure Gas Quenching Furnace Based on CFD Zhijian Wang 1,a, Xiaoyan Wang1,b and Xiaofeng Shang 1,c 1School of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang Liaoning, China, 110136 awangzhijian1974@sina.com, b wlfn2005@163.com, cxfshang@vip.sohu.com Keywords: Vacuum high-pressure gas quenching, Cooling rate, CFD, Flow field, Temperature field.
From changing the structure and technology of nozzle-type vacuum high pressure gas quenching furnace, by a large number of computer simulation, this paper discusses some factors affecting the cooling rate.
The simulation results for the further development of new high-pressure gas quenching vacuum device provide a theoretical basis.
In this paper, to improve the efficiency of equipment, by the method CFD, how the structure of furnace chamber and arrangement of workpieces affect the quenching rate is studied.
It shows the simulation result of the velocity vector in Y = 0 section.

CFD (Computational fluid dynamics) based on micro element is a powerful method for fluid analysis[1]-[3].
Preliminary Study on Seakeeping Capacity of Sailing Amphibious Vehicle Based on CFD [J].
Journal of System Simulation, 2009, 10:3142-3145
Simulation for Flow Field around Sailing Amphibious Vehicle [J].
Journal of System Simulation, 2007, 22:5130-5132

Therefore the research on the CFD fire extinguishing simulation is rapidly developing these years.
Only implementing several effective tests associating with CFD simulation, both the cost of the test and the pollution will be highly reduced.
The employed computer simulation software is FDS.
Utilize the computer numerical simulation software to implement the fire extinguishing simulation with the different foam flow rate - 0.5L/min，0.8 L/min，1 L/min，1.5 L/min，2 L/min, etc. respectively.
Reduced-Scale Experiments on the Water Suppression of a Rack-Storage Commodity Fire for Calibration of a CFD Fire Model.

Air flow simulation in high-pressure fan with splitter blade Wang Xiaolin 2,Yang Dinghua2,a, Yang Gensheng2 , Li Zhong2, LI Jianfeng3 Zhang Dalong1, b , Lv Junfu 1Department of Thermal Engineering, Tsinghua University, Beijing, China 2Shenhua Group Co.Ltd, Beijing China 3Scientific and Technical Service Center，China Electricity Council，Beijing，100038 aydh10@mails.tsinghua.edu.cn, bzhang_dalong88@163.com, Keywords: Centrifugal fan, Numerical simulation, CFD, Splitter blade, Flow field.
Along with computer software and hardware development and the large-scale commercialization CFD software, it is convenient for the numerical simulation.
More and more people start using the commercial CFD software to simulate entire three dimensional flow field of fans[1,3,4]to design the better air blower.
The curve about “the actual air blower simulation value” is the simulation value on the air blower itself.
Air flow simulation in the blower.Fluid Machinery.Vol.34.

Numerical Simulation of Random Wind-excited Response Analysis of Henan TV Tower Yong ZENG1,2,a, Hongmei Tan1,2,b 1.
The shape coefficient of the TV Tower’s each segment is obtained based on CFD.
CFD simulation to obtain the shape factor is obtained by CFD simulation and wind load time history of the tower is generated by harmonic synthesis.
Walther (1997), “Aeroelastic analysis of girder sections based on discrete vortex simulations” [J].Wind Eng.
Numerical Simulation of the Drag Coefficient and Analysis of Dynamic Response for Flow Around Henan TV and Broadcast Tower(I)[J].

Numerical simulation Abstract.
Lattice Boltzmann methods (LBM) have become an alternative to conventional computational fluid dynamics (CFD) methods for various systems.
Simulation indicate that LBM can simulate the vortex taking place and shedding effectively.
After twenty years of development, lattice Boltzmann methods have become an alternative to conventional computational fluid dynamics (CFD) methods for various systems.
The data demonstrate the validity of LBM simulation.

Today, with increasing maturity of CFD technique and computing power, one focus in numerical simulation of combustion is in the area of non-equilibrium chemistry and multiphase flow.
Therefore, CFD codes can serve as a powerful tool used to perform low cost parametric studies.
Geometry and Mesh Generation Grid generation represents a major challenge for CFD analysis.
The final unstructured grid that had 50000 cells was used in the simulation.
The ranges of the simulation values are: 10000W Q =& , 1.0 0.7, ,5.0=φ and 30% 20%, %,10=γ .