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Study and Simulation for Optimization Plan of the Liquamatic Fire Water Cannon with Self-swinging Device Ji Zhou1, 2, a, Guorong Li2, b 1Zhejiang Shuren University, Hangzhou, Zhejiang Province, 310015, China 2Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia Autonomous Region, 014010, China acappi@163.com, bligr11@163.com Keywords: Fluid field simulation, Liquamatic fire water cannon, Self-swinging, Structural parameters.
In this paper, fluid field simulation was conducted with the fire water cannon, which is one of the most commonly used equipments in fire fighting.
These simulation results will provide useful theoretical guidance for design of other types of fire water cannon.
The opening of nozzle can be adjusted by a handle operation, which can determine direct jet or spray jet. 1.monitor head 2.handle operation device 3.outlet pipe 4.location and locking device 5.inlet pipe 6.connecting rod 7.disk drive 8.bevel gear 9.driven shell 10.impeller 11.monitor feet 12.monitor base 13.feet mechanism Fig. 1 Structure of the liquamatic Fire water cannon with self-swinging device Simulation Analysis of Structural Parameters on Jet Characteristics Fluent software, as one of the general CFD softwares, is used to simulate complex flow, ranging from incompressible fluid to highly compressible fluid [4].
Fig. 2 Circular flow channel model Fig. 3 Square flow channel model Fig.4 and Fig 5 show the velocity flow simulation under different cross-sectional shape of the monitor body.

The commercial CFD code FLUENT is used to model the plasma and the solid anode part.
Hsu first used MHD and hydrodynamic equations successfully numerical simulation of free-burning argon arc，and verified the accuracy of the simulation results through experiment [1].
For numerical simulation and industrial application there are still very important indicators.
Numerical simulation of heat transfer and flow of the free burning arc[J].
Plasma Process. 19153-70 [12] Zhao G Y, Dassanayabe M and Etemadi K 1990 Numerical simulation of a free-burning argon arc with copper evaporation from the anode plasma chem.

The simulation results show that the average droplet size of pressure-swirl-nozzle is the minimum and the disperisity of atomization flow field of air-blast-nozzle, effervescent-nozzle, pressure-swirl-nozzle, plain-orifice-nozzle increases in turn.
Moreover, basing on the CFD software analyze the spray effect of different nozzles, than choose a nozzle type which is most suitable dry granulation.
Granulation chamber physical model and boundary conditions Atomization flow field simulation results of four nozzles The simulation result shows that the dispersity of droplets of air-blast-atomizer, plain-orifice-atomizer, pressure-swirl-atomizer, effervescent-atomizer arise by their turns, and droplets mainly distribute near the reamer because of the effect of gravity.
Numerical Simulation and Optimized Design of Dry Granulator for Ceramic Materials.
Numerical Simulation of High-pressure Spray Coal Dust Capture TechnologyBased on Fluent Software and Its Application [A].

Research on Trait in Heat Exchange and Flow of Inner Single-phase Currentin Micro channel Yue-lianHU Architectural Engineering Department,Wenzhou Vocational &Technical College,Wenzhou,325035,China 53461990@qq.com Keywords: micro-channel;flow and heat transfer;CFXprogram;numerical simulation Abstract.During recent years,micro-channel heat transfer technique has been successfully used in many practical situations，and has notable advantages of high heat transfer efficiency and compact configuration。
Conclusion In the article,the computation model is achieved using the mesh, the numerical simulation for the characteristics of the forced convective heat transfer and fluid flow of the single-phase water in the annular micro-channel with the gap of 1.5 mm is carried out, the characteristics of fluid flow and heat transfer is obtained in the annular micro-channel with the gap of 1.5 mm, the various influent factors on fluid flow and heat transfer are analyzed, the various influent curvesare obtained on the characteristics of fluid flow and heat transfer, and so that a clear understanding is achieved on fluid flow and heat transfer in the annular micro-channel.
But, due to the specialty of the annular micro-channel, it is difficult to understand the generating process and the specific mechanism completely and accurately and it is necessary to carry out more experiments and numerical simulation to verify it.
General software for computational fluid dynamics (CFD).

According to numerical simulation result, the main factors in swirl number are camber and angle of attack, the greater angle of attack, the greater the camber ,the stronger swirl will be.
This paper use commercial software ICEM CFD build the three-dimensional meshing, and FLUENT as solver, it takes second-order upwind scheme as calculation method and RNG k-ε model as turbulence model.
Numerical Simulation and Experimentation Research on Vortex Enhancing Combustion of Solid Fuel Ramjet[D].
Simulation test of NACA airfoil used on mining axial-flow fan[J].
Numerical Simulation and Test Research on the Hydraulic Performance of Down hole Mud Turbine[J].

It was confirmed that the degree of mixing in ceramic-based microfluidic passive mixers was well matched with the numerical simulation data.
After manufacturing the various kinds of mixers, the microfluidic test was progressed and their performance was evaluated comparing with simulation result.
In addition, a numerical simulation using a commercial tool (CFD-ACE+; ESI, Huntsville, AL) was progressed to obtain the mixing efficiency of T-type mixers and chaotic mixer.
Comparing with simulation data, it could be deduced that ceramic-based T-type mixers shown here were well operated under the diffusion driven liquid mixing.
Comparison of mixing efficiency at the point of microchannel outlet between numerical simulation data and experiment result Channel width Mixing efficiency (η) Simulation Experiment T-type mixer 1 mm 26% 12.1% 200 µm 90% 80.6% Chaotic mixer 200 µm 47% 45.0% Conclusion Here, we showed a novel process to fabricated ceramic-based microfluidic passive mixer using LTCC and photolithography.

This paper is focused on flow simulation in the sub channel of fuel rod assembly using code ANSYS Fluent 14, which is commercial computational fluid dynamics (CFD) code.
Pressure which is used in this simulation are just above the thermodynamic critical pressure value of CO2.
Firstly, the simulations were compared with the effect of increasing heat flux on heat transfer coefficient.
Simulation Results These are the simulation contour of heat transfer coefficient with increasing heat flux at pressure just above critical pressure 7.59 MPa.
Along with simulation contours plots of heat transfer coefficient v/s heated length are given below.

In this work, we use computational simulations to show there is a transitional region (1 < Re < 20) in between the laminar and creeping regimes for two different micropost array geometries.
We use computational simulations and numerical analysis to better understand the fundamental differences between creeping (Re << 1) and laminar flow (Re > 1) in micro post arrays and identify a transitional flow regime (1 < Re < 20).
A structured mesh was built in ANSYS ICEM CFD 14.5 and element quality was checked using the determinant, angle and aspect ratio as metrics.
Once the CFD simulations were complete, flow profile data was exported into MATLAB for analysis.
Water is a Newtonian fluid, unlike blood, however it is a useful benchmark fluid as it is well-defined and simulating water will allow us to directly compare the simulations to experimental data.

The simulation result supplied reference for design of oxygen enriched and flue gas circulating combustor.
Besides, swirl flow exits in this simulation, and RNG model fits swirl flow better, so RNG model is used for the numerical simulation.
[2] Maria C C,Raffaele T A CFD Based Off-Design Study of Micro-Gas Turbine Combustors.ASME,GT2005-58924
[4] Shao Jie.Novel Low NOx Swirl Burner Cold simulation experiment and numerical simulation [M].
Application of numerical simulation in the syngas gas turbine combustor design [J].

Simulation of Unsteady Incompressible Flow using a New Particle Method Khai-Ching Ng1, a,*, Syamimi Mohd Yusoff 2, b, Yao-Hsin Hwang3, c Tony Wen-Hann Sheu4, d and Mohd-Zamri Yusoff5, e 1,2,5Center of Fluid Dynamics (CFD), Department of Mechanical Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia 3Department of Marine Engineering, National Kaohsiung Marine University, Kaohsiung 805, Taiwan 4Center for Advanced Studies in Theoretical Sciences (CASTS), National Taiwan University, Taipei, Taiwan ankching@uniten.edu.my, bshamimi@uniten.edu.my, cyhhwang@webmail.nkmu.edu.tw, dtwhsheu@ntu.edu.tw, ezamri@uniten.edu.my Keywords: MPPM, MPS, particle method, Rayleigh-Taylor instability, Atwood number Abstract.
Introduction Smoothed Particle Hydrodynamics (SPH) method, Moving Particle Semi-implicit (MPS) method and Finite-Volume Point (FVP) method are the widely-used particle methods in incompressible flow simulations [1].
Yildiz, Simulation of single mode Rayleigh-Taylor instability by SPH method, Computational Mechanics. 51:5 (2012) 699-715