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In this paper authors extended their studies using CFD for the geometrical optimization of dump diffusers with different aerodynamic shape flame tubes for modern aircraft engines.
Numerical Studies In this study numerical simulations have been carried out with the help of a well established two-dimensional Shear Stress Transport (SST) K-ω turbulence model.
We have conjectured that the judicious optimization of diffusers is needed, within the given envelope of the modern aircraft engines, with respect to the aerodynamics constraints for controlling the pressure recovery and the losses, which can however be accomplished through the three-dimensional CFD techniques lucratively.
We further concluded that using the CFD tools more flexible and profitable design options can be generated for the dump diffusers for the modern aircraft combustors.
[15] V.R.Sanal Kumar, V.R et al., “Internal Flow Simulation of Dump Diffusers for Modern Aircraft Engines,” 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Colorado Convention Center, Denver, CO, USA, 2 - 5 Aug (2009)

The response time is predicted through simulation with the contact angles ranging from 130° to 170°.
CFD simulation for dynamic behavior We employ the VOF model combining surface tension model and contact angle effect to predict the mercury meniscus shape and position in microchannel as time elapses [5].
The response time is predicted in simulation, when the contact angles ranges from 130° to 170°.
Early conduction is observed in simulation as shown in Fig. 8.
The simulation analysis on the dynamic behavior of the switch shows that the response time is dependent on the contact angle and decrease slightly with the increase of the contact angle.

As the axial symmetric structure of the thruster, the simulation model is half a single path with symmetric operation.
In virtual 3D flow field, the dissociation characteristic and temperature variation of ammonia mixture is quite different from the lumped parameter characteristic, thus a CFD simulation is conducted to analyze the temperature and species variation in heat exchanger and nozzle.
The mole fraction of the species calculated from CFD simulation is identical with the experiment data.
It proves that the simulation results are believable.
Fluid-solid coupled heat transfer and flow simulation of platelet heat exchanger in thermal thruster.

Researchers have studied PEM fuel cell performance through simulation [9, 10].
To account for porous GDL, the diffusivities for species concentration and the conductivity for membrane potential can be modified using the Bruggman correlation: (5) The local current density can be calculated using: (6) The average current density can be calculated using: (7) The governing equ.1 to equ.4 can be solved using commercially available CFD software such as Fluent to perform FEM simulations.
Simulation chooses electric potential 0.25, 0.45, 0.65, 0.75 and 0.95V respectively to calculate output current density.
During simulation, the load potential is 0.65V, temperature ranges from 303K to 363K.
Simulation investigates the distribution of gases in channel, leading to pressure drop and material distribution variation.

Ice accretion on the leading edge of the NACA 0012 airfoil is predicted using CFD method based on spring analogy.
Numerical simulations using the Reynolds-averaged Navier-Stokes equations are conducted to investigate the effect of ice shapes on the aerodynamics performance.
The numerical simulations of ice accretion are performed under the geometric and aerodynamic and meteorological conditions shown in Table 1.
Conclusions In order to study two distinct icing related problems on airfoil, one software package is being developed including icing simulation and effect analysis.

By numerical simulation of finishing project, its feasibility is defined.
Fig.2 Basic principle diagram of gas-particle two-phase compulsive circulation flows finishing 1. nozzle 2. circulation formation component 3. oriented component 4. particle 5. isolated net 6. workpiece Numerical Simulation For avoiding blindness of experimental research and improving foresight of practical application, numerical simulation of gas-particle two-phase compulsive circulation flows finishing is done through computational fluid dynamics(CFD) software(Fluent, Gambit), and it provides credible theoretic basis for thorough research.
Its feasibility and finishing effect is defined by numerical simulation and experimental study.

The most immediate outcome of this research is that the CFD simulations suggest inexpensive design alterations in the diesel particulate filter which can be fabricated easily.
Hence, all the results of simulations shown later are confined to ultrafine particles of size < 0.1 µm.
Simulations were run for varying values wall shear stress, all other parameters remaining constant (Figures 2, 3, 4).

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).

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].

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].