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The internal flow of jet fan has been simulated using FLUENT software.By changing the length of exit duct and the angle of the exit cowl,a series of numerical simulation research has been done.The calculation results show that the length of exit duct and structure of exit cowl has obvious influence on jet fan aerodynamics performances and reasonable export structure can effectively improve jet fan aerodynamic performances.
In order to find jet fan outlet structure reasonable parameters and range of options, numerical simulation research has been done by changing the length of exit duct and the angle of the exit cowl.
Fig.3 is the relationship between flow rate Q and L/D, and data Q are export from the numerical simulation results.
Conclusion The internal flow of jet fan has been simulated using CFD technology.
Naser.Simulation of airflow and pollution levels caused by severe traffic jam in a road tunnel[J].Tunnelling and Underground Space Technology,2010 25:70-77 [4] Chen Kai, Pan Di-lin,Internal Flow Field Analysis of Jet Fans and The Influence of Hub Ratio,FENGJIJISHU[J].2013 (1) 15-21 [5] Pan Di-lin,Aerodynamics Performances of Tunnel Jet Fan,Materials Science and Engineering[J].2013 310-314

Numerical simulation of MHD rectangular duct flow with FCI based on magnetic induction method Tianneng Xu1, a, Jie Mao1, b, Huachen Pan1, c 1HANGZHOU ZHEJIANG 310018, HANGZHOU DIANZI UNIVERSITY axutianneng@163.com, bmaojie@gmail.com, chuachen_pan@yahoo.com Keywords: MHD effect; Magnetohydrodynamic; FCI; rectangular duct flow.
The report of case with PEH is rarely seen since it probably requires a full 3D simulation to describe the flow velocity and electric current distributions around each hole.
In this paper, a commercial computational fluid dynamic (CFD) software FLUENT is used to simulate the MHD problem.
Numerical Simulation The structural material of rectangular duct is stainless steel, whose electrical conductivity is σw = 1.4×106 S/m.
Several velocity and pressure diagrams were obtained from the numerical simulation results of case1 and case2.

FLUENT is a suit of international commercial CFD software.
Compare the simulation results with analysis results based empirical formula.
Fig.1 shows the simulation and physical photo of TUV.
There are biased between simulation results and the empirical formula.
In a reasonable range, the credibility of simulation results and the simulation results are intuitive.

Modeling and simulation were used to evaluate a new reactor concept for SiC bulk growth.
Pyrometric measurements Numerical simulation The electromagnetic, flow and temperature fields are analyzed by finite volume methods using CFD-ACE software.
Simulations Results Numerical simulation of the process is used to visualize gas velocity and thermal distribution in the reactor.
The simulation results with and without the gas flow are shown in fig. 2.
These simulations are validated by CVD deposition experiments on the lower part and by boule growth experiments [3,4].

All simulations were conducted based on the general-purpose CFD code FLUENT 13.0®, which adopts a control volume based finite difference method to solve the conservation equations for mass and momentum.
Large eddy simulation method was employed in this work.
In the case of r=30, the simulation under predicted the spread width in the zone of large spread zone of w/d>2.00.
And in the case of r=60, the simulation over predicted the spread width in the zone of large spread zone of w/d>2.00.
Yang, Three-dimensional simulation of square jets in cross-flow, Physical review E, 69 (2004) 066302.1-066302.22

A novel air purifier for trace SO2 removal and simulation of the purification effect Donglai Xie1, a, Jinhui Luo1, b 1 School of Chemistry and Chemical engineering, South China University of Technology (SCUT), NO.381, Wusan Road, Guangzhou, China 510641 adlxie@scut.edu.cn, bluo.jinhui@mail.scut.edu.cn Keywords: Air purifier, SO2, Design test, Numerical simulation Abstract.
Table. 1 Test results of different absorbing liquid to absorb SO2 Absorbing liquid H2O NaOH Na2CO3 Concentration (mol/L) 0.0001 0.0001 In-flow (m3/h) 70/80/90/100/110 70/80/90/100/110 70/80/90/100/110 Absorbing time (h) 0.5 0.5 0.5 Inlet SO2 concentration (ppm) 1/5/10 1/5/10 1/5/10 Outlet concentration (ppm) 0 0 0 Simulation of the air purifier ANSYS FLUENT is a fully functional, well-adapted and widely applied commercial CFD software in solving various flow problems, based on Finite Volume Method[7].
The purification effect of different amount of gas is simulated with FLUENT-software, the concentration in different monitoring surface and different zone were taken as the evaluation index of the result of the simulation.
Vol. 36 (2010), p. 179 [7] Jiang Li: Numerical Simulation on heat transferand flow resistane performance and fouling characteristics of spiral grooved tube (In Chinese).

A Novel Simulative-Experimental Approach to Determine the Permeability of Technical Textiles Tim Schmidt1,a*, Florian Schimmer1,b, Aaron Widera2,c, David May1,d , Nicole Motsch1,e and Constantin Bauer2,f 1Institut für Verbundwerkstoffe GmbH, Erwin-Schrödinger-Str. 58, 67663 Kaiserslautern, Germany 2Math2Market GmbH, Richard-Wagner-Straße 1, 67655 Kaiserslautern, Germany atim.schmidt@ivw.uni-kl.de, bflorian.schimmer@ivw.uni-kl.de, caaron.widera@math2market.de, ddavid.may@ivw.uni-kl.de, enicole.motsch@ivw.uni-kl.de and fconstantin.bauer@zf.com Keywords: simulation, simulative-experimental approach, digital twin, CFD, calibrated simulation Abstract.
Figure 2: Visualization of the process for the model generation using micro-computer tomography Simulation.
Hydrodynamic compaction does not take place during simulation in FlowDict.
Simulation based on Digital Model and Digital Twin.
Verleye et al., “Permeability of textile reinforcements: Simulation, influence of shear and validation,” Comp.

The water pressure distribution of the blade surface of the impeller is obtained, which is more accurately than previous calculations [1], by the interior flow field CFD analysis on the high-pressure small-flow centrifugal pump, and the water pressure in the interfaces is transferred into the corresponding surfaces of the structure field by the One-way Fluid-structure Interaction technique.
The mesh quality is one of the key factors in the CFD calculation, which affects directly the accuracy of numerical calculation, and even the success or failure of computing problems[3].
Simulation results show that: under the water stress, the maximum deformation occurs on the brink of the blade, the maximum equivalent stress occurs at the liner near the blade pressure surface

Table 1deomstrates an excellent comparison of the average Nusselt number at the walls of the lid-driven cavity with two cylinders located along the horizontal centerline between the present results and that of Nek5000 CFD solver (Open-source solver; Argonne National Laboratory).
Comparison of the average Nusselt number at the walls of the lid-driven cavity with two cylinders located along the horizontal centerline between the present results and that of Nek5000 CFD solver (Re = 100, Pr = 0.7, ro/H = 0.2) Isothermal Hot Cylinder- Adiabatic Cylinder Ri Present* Nek5000+ %Relative Error 0.01 10.1 9.79 3.1 1 10.3 9.81 4.8 10 11.15 10.72 3.9 Results and Discussion Figure 2 shows the effect of the presence of the circular cylinders in the lid-driven cavity for various Richardson numbers and different thermal boundary conditions of the cylinders.
The Re number, Pr and ro/H were kept constant at 100, 0.7 and 0.2, respectively for these simulations.

By the Theory of Wind Turbine Design [6-7] and the CFD, X-foil numerical simulation analysis, the horizontal turbine was optimized, and its final basic structural parameters were listed in Table 1.
The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD[J].