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Ship Hull and Free Surface Panels Fluent CFD The commercial CFD software FLUENT version 6.2.16 is utilized for the computations in the present study.
A hybrid unstructured mesh consisting of about 1.7 million cells was generated for the present simulations.
This corresponds to a numerical simulation of the resistance or propulsion model test.
CFD could have saved considerable costs and times.
Both CFD codes, i.e.

A computational fluid dynamic (CFD) model was developed to study the fluid flow phenomena taking place in an industrial tundish.
Selected computer simulation results were validated with experimental data.
The CFD model included the Navies-Stocks continuity, and momentum governing equations.
All the equations were solved using a commercial CFD software-Fluent 6.3.
CFD modeling of liquid steel flow behaviors in industrial tundish: Third baosteel biennial academic conference, Shanghai, China: Sep 26-28, 2008

In this article We analysis the CFD software named OpenFOAM and detailed testing its performance on high-performance computer, and we do analysis the results which provide a valid reference to the engineers. so there will be another choose of CFD software.
Introduction Last year we conducted a survey of small range and found that The most widely use of computer-aided tools CFD production is ansys, Fluent in all colleges and universities, research institutions, enterprises.
This stage Industrial design is very complex，CFD software will always cost so many time in computing.
The feature of OpenFOAM The OpenFOAM[1] is a free, open source CFD software package produced by OpenCFD Ltd.
[3] Tao Wei, Parallel Molecular Dynamics Simulation of Lysozyme Hydration on IBM Blade Center Cluster[J],ICIS,2010.10

Experiment models CFD Analysis After the performance of CFD analysis in the north (N) direction, the result was comparable with the wind speed ratio obtained from the wind tunnel experiment.
The software used in the CFD analysis was STREAM 8.0.
Fig. 3 shows the CFD modeling.
Graph comparing the wind speed ratio before and after the construction of piloti Results of CFD analysis Figure 5 compared the wind speed ratio of the north between CFD and wind tunnel experiment for each experiment model and measuring position.
Comparison of wind speed ratio between wind tunnel experiment and CFD for each measuring position Conclusion This study chose three common forms of apartment layout and compared the wind speed ratio at different positions in the complexes through wind tunnel experiment and CFD analysis. 1.

The purpose of the paper is to simulate transmission efficiency for different bending radius of aerosol sampling inlet using CFD.
Results from simulations show that the greater transmission efficiency aerosol sampling inlet will be, the larger bending radius is.
The CFD model can effectively simulate the characteristic and loss of aerosol particulate matters through the bending tube.
CFD simulation In terms of aerosol particle trajectories, the maximum width of the shadow zone occurs at about 0.2 fuselage radius and for drop sizes and velocities for which the modified Stokes number S is ~6.
The simulation results showed that the tube size caused different transmission mechanisms.

The Computational Fluid (CFD) technology has been successfully used in the numerical simulation of the turbulent flow of centrifugal pump.In this article , we carry on the experiment by using uses ANSYS software,based on the standard k-ε model, SST model and BSL model , to get the the flow field of the numerical simulation of the impeller .We found that the simulation results and the actual results are different under different turbulence models.
The impellers is also the most important flow components of the Centrifugal pump.The impellers can directly change the original motivation mechanical energy to the liquid in order to increase the static pressure and kinetic energy of the liquid.So how to improve the performance of its hydraulic pump efficiency has great significance in improving its efficiency. [1].In recently,the CFD analysis techniques has been widely applied and gradually improved in fans, pumps and many other industries [2].In addition ,the CFD analysis techniques has slao become an important method to the pump body CFD numerical simulation of flow field for the optimization of pump [3,4,5,6,7].Furthermore, a large number of engineering in practice has proved that the numerical simulation results are quite reliable [8].However,the result of which model is most consistent with the practice is still a problem needed to be discussed.
But such errors belong permissible error, but also further validate the simulation accuracy.
[2] Zeng Yong zhong, Liu Xiao bing based Fine pump flow field numerical simulation [J].
Numerical simulation and large water pumping station hydraulic optimization [J].

Method Validation.The simulation values and experimental values are compared to verify the effectiveness of the CFD calculation method.
The maximum temperature offset is less than 1.7 °C at the simulation time of 30 minutes, and this meets the maximum temperature offset of suggestion [7].
With the result of this calculation, we can know that the simulation of flow field in numerical methods is suitable for this research.
Conclusion From the above study, we can get the following conclusions: (1) In the range of allowable error, it is feasible and effective to use CFD numerical simulation analysis method to have an analysis of transient analysis for thermal comfort prediction in cabin
[8] JONAS JONSSON, Including Solar Load in CFD Analysis of Temperature Distribution in a Car Passenger Compartment, Lulea University of Technology, 2007:128 CIV.

Key findings highlight the significance of small-scale turbulent structures, the competition between Coriolis and viscous forces, and the successful utilization of CFD LES (Large Eddy Simulation) for quantifying and visualizing the viscous sublayer and eddy flow.
RANS and LES are two commonly used approaches in Computational Fluid Dynamics (CFD) to simulate turbulent flows.
Table I: Description of the OPENFOAM simulation.
In CFD, y+ is a dimensionless wall distance parameter that is used to determine the level of resolution required near the walls of a fluid flow simulation.
Figure 2: Comparison of simulation data with Nusselt and Charwat et al.'

CFD (computational fluid dynamics) simulations can be considered as the best options for research in wind flow area these days.
One of the problem of CFD is that it is prone for error.
Basically, all simulations in the hand of non-professional users is, but with CFD differences from reality are often 2 - 5 times [7].
Prior to the decision about final placement of FMS, a preliminary CFD simulation in CFD software OpenFOAM was created [13].
Franke et al., The Cost 732 Best Practice Guideline for CFD Simulation of Flows in the Urban Environment: A Summary.

These examples demonstrate that the easiest and fastest method for verifying the accuracy of the numerical simulations is to compare the simulation results with those obtained from the experiments.
Numerical simulation Model Structure.
Simulation model define.
Figure 5 show the compared results between the experiments and the simulations for the three tire types.
Experiment and Simulation result for numbered A0, A1 and A2.