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Design, CFD Investigation and Implementation of a Novel Diverter Mechanism for Water Flow Measurement Y.L.
Yang Center for Measurement Standards, ITRI, 30 Ta Shueh Rd., Hsinchu, 300, Taiwan, China Keywords: Flow Diverter, Liquid Calibration Facilities, Draining Nozzle, CFD Abstract.
The simulations indicated that the good construction of feeding pipe where the original circular section was converted into rectangular resulted in approximately symmetrical velocity profile across the outlet section.
For CFD simullation, fully developed flow conditions was assumed at the inlet; and the tangential and radial velocities were assumed zero.
In this study CFD-ACE+ was adapted to investigate the construction of fluid flow diverter.

Introduction There are three commonly methods to study tunnel fire ventilation: model test, actual fire simulation by abandoned tunnel and numerical simulation by CFD (Computational Fluid Dynamics) [1], in order to get the distribution of temperature, pressure and velocity.
CFD numerical simulation technique is widely used in tunnel fire ventilation study currently, which has the advantages of reducing the workload of the ground experiments, shorting the development cycle, saving experimental costs and so on, and its accuracy can be compared with the model test results [3].
CFD technology can visually simulate tunnel air flow velocity, temperature, pressure and other physical quantities, and the simulation results play a reference role on the selection of tunnel fire ventilation solutions.
CFD simulation of fire smoke behavior with transverse ventilation-comparison with model tests. 10th Intenrarsonal symposium on the Aerodynamics &Ventilation of Vehicle Tunnels, 2000
CFD simulations of a tunnel fire-Part Ⅰ[J].

The investigation of these flow field characteristics made use of the computational fluid dynamics (CFD) to simulate the air flow in the classifier.
During the last several years, Computational Fluid Dynamics (CFD) has garnered significance for its investigation of fluid flow[6].
In fact, the commercially packaged CFD software, Fluent, is one of the most efficient means of studying the fluid dynamics of many physical systems, having been widely used in engineering applications including simulation of flow fields in classifiers.
The use of CFD thus alleviates the problems of mass in material experiments and improves efficiency.
Investigation and simulation of a cross-flow air classifier.

Introduction Computational Fluid Dynamics (CFD) has become a commodity used regularly for the design of aircraft with continuous growing of computing power.
Solution-based adaptively refined grid generation approach should be a fundamental technique for a flexible and reliable CFD simulation, as pointed out by reference [1] by the experiences of numerical simulations with Boeing’s TRANAIR software.
Three solution adaptions are applied for all the simulations in this case.
As can be seen, the cells in the grid of simulation 10s are only 68.65% of that in simulation 12, while simulation 10s give the best results which contains a sharp shock wave without oscillations.
Flows around RAE2822 airfoil and Suddhoo four-element airfoil are carefully investigated to validate the feasibility and efficiency of the method for adaptively refined Cartesian grid in CFD.

Rezende [5] reviewed through CFD a turbulent separation bubble on a tilted thin flat plate.
Due to its simplicity it has been widely used for CFD calculations.
The mesh was generated through the ICEM CFD software.
Simulation of a turbulent separation bubble using RANS. 2012. 95f.
Proceedings of the 21st Conference of the CFD Society of Canada, Sherbrooke, QC, Canada, May 2013.

Numerical Simulation to Study the Effect of the Particle Deposition Morphology on the Filtration Efficiency of the Fibrous Media QIAN Fu Pinga, YU Xian Kunb School of Civil Engineering and Architecture, Anhui University of Technology, Ma’anshan 243002, China aemail: fpingqian@gmail.com bemail: gushen5566@126.com Keywords: Grid “freezing”; Particle deposition morphology; Fibrous media; Filtration efficiency; Numerical simulation Abstract.
Meanwhile, the filtration efficiencies of the fibrous media with different deposition particle numbers and particle deposition morphologies were calculated using numerical simulation method.
This study attempts to use the grid “freezing” technique in the computational fluid dynamics (CFD) to handle the moving boundary problems during the growth process of the “dendrites”, and simplify the dynamic boundary calculation to the fixed boundaries [11].
Model of the Numerical Simulation.
To facilitate the simulation, four simplified morphologies are set up in Fig. 2.

Spalart-Allmaras one-equation turbulent model was used for simulations.
It is clear to see that the lift coefficient of the present CFD results are in fair agreement with the experimental data.
(a) CL～α (b) CD～α Fig. 6 M=1.89，comparison between the experimental data and CFD results M=1.5 results.
High-pressure shock tunnel experiment and CFD calculations on spike-tipped blunt bodies, AIAA-2002-2918
Numerical Simulation of Self-Sustained Oscillations Over Spiked Blunt-Bodies.

Research On The Effect Of Natural Ventilation On Buses In Summer Based On CFD Numerical Simulation Method Bao LIN 1, a, Xueting WANG 1,a and Xiao HU 2,a 1Department of municipal and environmental engineering, Shenyang Jianzhu University, Shenyang, Liaoning, China,110168 2China Resources Gas Group Ltd, Jinan, Shandong, China axuew.ting@hotmail.com Keywords: city buses; natural ventilation; vehicle velocity; roof openings; interior thermal comfort; the whole-domain approach Abstract.
Based on CFD numerical simulation, with a whole-domain approach, this paper predicts air flow and thermal comfort in naturally ventilated bus.
This paper, with the help of CFD simulation software, simulates the bus interior temperature and velocity under different vehicle velocity and open condition of roof openings.
Table 1 Simulation cases Outdoor air temperature[˚C] Vehicle velocity [km/h] The state of bus roof openings Side window Case1 31 45 close Maximum open Case2 31 45 open Case3 31 25 close Case4 31 25 open Results of the Simulation and Analysis Thermal Environment in different parts of the bus.
This part focuses on the simulation results based on different open condition of roof openings.

This study presents optimal design of wind booster, by utilizing Computational Fluid Dynamics (CFD).
In CFD-based experiments, guiding and throttling effects of the wind booster are able to increase mechanical power of a VAWT.
In this work, a wind booster is proposed for CFD-based analysis and optimization in order to improve angular speed of the VAWTs.
Results and discussion The experiments of VAWT rotations are performed with CFD-based simulations by utilizing XFlowTM CFD software [5].
In simulations, the wind speed is varied from 1 m/s to 8 m/s for low wind speed conditions.

And the result was compared with that of existing experiment to find a reasonable method for the simulation of the flow field inside the cyclone.
In this article, the flow field inside tangential inlet cyclone separator is simulated by CFD method, and the result is compared with that of experiment to find a reasonable method for the simulation of flow field inside the cyclone.
This CFD simulation first bases on standard k-ε model and tries to find an optimal combination, so there are 5 factors need to be considered, including 1 two-level factor and 4 three-level factors.
Numerical simulation study of gas-solid two-phase movement within cyclone Separator.
Wang.Computational fluid dynamics analysis-Principle and application of CFD software.