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This work used ANSYS software to calculate the aerodynamics parameters generated by main rotor with help of CFD tools using the remarked ideal of simulation in [2-7].
CFD b.
CFD Theory a.
Natural Frequency Fig. 7 Modal method Summary A steady CFD-CSD coupled simulation was used to analyze the strength of the designed main rotor.
For the future work, the durable designed main rotor was analyzed with a fully CFD-CSD coupled simulation.

The simulation analysis results will be compared and validated by practical spray coating experiment, so as to determine the reliability of simulation to implement the spray flow field simulation technique for large area uniform spray coating.
This study uses computational fluid dynamics (CFD) software to analyze the spray characteristic on the flow field distribution and flat plate coating in the case of fixed ultrasonic vibrator, vibration wave and array ultrasonic nozzle arrangement.
The simulation analysis results will be compared and validated by practical spray coating experiment to determine the reliability of simulation, and to implement the spray flow field simulation technique for large area uniform spray coating.
Research Methods This study uses three-dimensional CFD, finite volume method and SIMPLE algorithm and first order upwind difference method for numerical analysis, and uses standard turbulence model for related simulation calculation.
Point-6 31.53 26.107 20.77% 31.49 28.255 11.45% Point-7 29.26 26.002 12.53% 28.84 30.474 5.36% Point-8 31.39 24.834 26.40% 31.36 27.883 12.47% Point-9 31.96 *** 0.00% 32.16 27.679 16.19% Average value 31.7 25.51 24.28% 32.42 27.36 18.89% *** SEM fails in measurement Conclusion This study aims at the influence of the parameters of ultrasonic nozzle height, substrate traveling speed and PITCH on the spray coating film thickness distribution in the array ultrasonic atomization spray coating process equipment technology, and uses CFD computer simulation analysis technique and compares atomization flow field prediction simulation analysis result with real machine test, to build a reliable computer simulation analysis model for array ultrasonic atomization spray coating process.

Numerical Simulation of Quenchant Flow Characteristics in Large Quench Tank Hui Sun College of Mechanical Engineering, Shanghai Dianji University, Shanghai, China sunh@sdju.edu.cn Keywords: flow field, large quench tank, numerical simulation Abstract.
The computational fluid dynamics (CFD) technique is employed to predict the flow of quenchant in a large quench tank.
In this work, the flow field in a large quench tank is predicted by adopting CFD technique.
In order to make the CFD analysis manageable, a number of simplifying assumptions are made.
CFD modeling of quench tank agitation, Proceedings of the 10th Congress of the IFHT, Brighton, UK, (1996), 655-669

Influence for Brake Torque of Hydraulic Retarder with Shape of Circulation Circle Chu Yaxu1,a, Lv Jinhe2,b 1East campus of Beihua University in Jilin city ofJilin province,China 2East campus of Beihua University in Jilin city of Jilin province,China acyx_1964@sina.com,b350573500@qq.com Keywords: CFD; the RNG turbulence; the shape of circulation circle; numerical simulation Abstract.
Based on CFD software platform, numerical simulation of 3-D with the internal characteristic of hydraulic retarder with different shape of circulation circle was simulated, and the RNG turbulence was adopted.
One of the main factors that influent the performance of hydraulic retarder was the shape of circulation circle, high braking torque can be gotten with the proper shape of circulation circle. numerical simulation was simulated with different shape of circulation circle based on the CFD software platform.
setting the calculation target according to the convergent curve is difficult to judge whether it achieve convergence, Because the simulation calculation of hydraulic retarder are unsteady calculation, Because the simulation calculation of hydraulic retarder are unsteady calculation, monitoring the pressure of the oil inlet and rotor torque changes in the view of convergence curve.
[5] He Ren,Yan Jun. 3D Numerical Simulation and Performance Prediction of Hydraulic Retarder[J].Machine Tool & Hydraulics,2009(3):250-253.

The model of exhaust silencers discussed in this article is fluid-solid interaction model and this paper uses the CFD software for numerical simulation of the model.
Mesh generation technology is an important part of computational fluid dynamics, and the accuracy of CFD calculations relies heavily on the quality of the generated mesh.
We can see that mesh generation technique is one of the key technologies in using CFD as effective tools in aerodynamics works.
This proves that numerical simulation methods can be used in silencer structure simulation and optimization.
CFD software principle and application ( Tsinghua university press, Beijing 2004).

In this paper, Computational Fluid Dynamics (CFD) method was used to simulate the air flow in the BiPV-Trombe wall.
The simulations of air flow and heat transfer in vertical channel of BiPV-TW were conducted using the commercial CFD code, FLUENT version 6.3[9].
Results Validation of CFD method.
The simplified model and comparison between the experimental data and CFD results for air outflow rate are showed in Fig 2.
In this paper, numerical simulation on the air flow for a fixed width of b=0.3m and height of H=1~6m have been conducted.

In present work CFD simulations are carried out using ANSYS FLUENT software using Volume of Fluids (VOF) method.
The CFD geometry is shown in Fig. 1.
Delgado, CFD simulation of bubble column flows: An explicit algebraic Reynolds stress model approach, International Journal of Multiphase Flow, 66 (2014) 11-25
Joshi, CFD simulations of bubble column reactors: 1D, 2D and 3D approach,Chem.
Tanga, Three-dimensional CFD–VOF–DPM simulations of effects of low-holdup particles on single-nozzle bubbling behavior in gas–liquid–solid systems.

Simulation of Solid-liquid Two-phase Flow Inside and Outside the Abrasive Water Jet Nozzle R.G.
Feng 1,e 1 Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan, 250061，China 2 School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW2052, Australia a haojieyuan@sohu.com, bchuanzhenh@sdu.edu.cn, cjun.wang@unsw.edu.au, dluxyu@sdu.edu.cn Keywords: Simulation, Velocity field of flow, Abrasive water jet nozzle Abstract: Simulation of the velocity field of solid-liquid flow inside and outside the abrasive water jet nozzle was studied by the computational fluid dynamics software(CFD).
As the development of computer technology and computed mathematics, a new subject about the flow and flow engineering-CFD becomes mature, the sign is that many CFD software appeared.
Many experts in domestics and abroad have used the CFD software to solve many problems which can not be solved by theory and experiment method.
This study used CFD software-Fluent to simulate the field of solid-liquid two-phase flow inside and outside the abrasive water jet nozzle.

Wind tunnel test and CFD simulation are widely used in the researches on the performance of railway wind-break wall and some important results are summarized.
CFD (Computational fluid dynamic analysis) simulation test research.
The scholars of Central South University such as JiangCuiXiang and LiangXifeng [9] used new type ultra-thin railway wind-break wall as test object to do the CFD simulation.
The current study of wind tunnel test and the CFD simulation test are to be improved.
Secondly, train was set as static processing in the CFD simulation in many cases without considering the train running speed.

Computational fluid dynamic is called CFD simply.
CFD simulation of the desander Basic assumptions The following basic assumptions are made for modeling and making the model more easy to solve
CFD simulation model FLUENT provides three kinds of multiphase flow model ：VOF , Mixture , Eulerian.
CFD simulation of internal flow field of gas - liquid cyclone [ J ] .
Chemical Equipment Technology by numerical simulation , 2005,26 ( 6 ) :17