A Combined Experimental and Computational Fluid Dynamics Analysis of the Dynamics of Drop Formation

This article presents a complementary experimental and computational investigation of the effect of viscosity and flowrate on the dynamics of drop formation in the dripping mode. In contrast to previous studies, numerical simulations are performed with two popular commercial computational fluid dynamics (CFD) packages, CFX and FLOW-3D, both of which employ the volume of fluid (VOF) method. Comparison with previously published experimental and computational data and new experimental results reported here highlight the capabilities and limitations of the aforementioned packages.

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COMPUTATIONAL FLUID DYNAMICS ANALYSIS OF FABRICATED MICRONOZZLE FOR SUPERSONIC PARTICLE DEPOSITION

Surface Review and Letters ◽

10.1142/s0218625x10013758 ◽

2010 ◽

Vol 17 (01) ◽

pp. 45-49

Author(s):

KYUBONG JUNG ◽

WOOJIN SONG ◽

DOO-MAN CHUN ◽

JUN-CHEOL YEO ◽

MIN-SAENG KIM ◽

...

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Particle Deposition ◽

Room Temperature ◽

Flow Analysis ◽

Dynamics Analysis ◽

Nanoparticle Deposition ◽

Computational Fluid Dynamics Analysis ◽

Computational Fluid Dynamics Cfd ◽

Simulation Results

A micronozzle was applied in nanoparticle deposition system (NPDS) for supersonic deposition. To determine whether suitable behavior of supersonic fluid can be produced or not, computational fluid dynamics (CFD) flow analysis was used. Ni particles were successfully deposited using the fabricated micronozzle in NPDS at room temperature. It was found that shorter micronozzle with larger side profile deposits wide and thick film compared to the deposition using long micronozzle with smaller side profile. These experimental results agree with the simulation results.

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A 3D Computational Fluid Dynamics Analysis of the Wells Turbine

21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 4 ◽

10.1115/omae2002-28255 ◽

2002 ◽

Author(s):

John Daly ◽

Ajit Thakker ◽

Patrick Frawley ◽

Elvis Sheik Bajeet

Keyword(s):

Fluid Dynamics ◽

Computational Fluid Dynamics ◽

Mach Number ◽

Computational Model ◽

Experimental Results ◽

Dynamics Analysis ◽

Cfd Model ◽

Wells Turbine ◽

Computational Fluid Dynamics Analysis ◽

Computational Fluid Dynamics Cfd

This paper deals with the application of Computational Fluid Dynamics (CFD) to the turbulent analysis of the Wells Turbine. The objectives of this work were twofold; firstly to develop and benchmark the 3D CFD model and then to use this model to analyse the airflow through the turbine. The model was analysed as fully turbulent compressible flow using the Fluent™ CFD code. The computational model was first benchmarked against previously published experimental and CFD data for two similar turbines. The computational model accurately predicted the non-dimensional torque and non-dimensional pressure drop, while the efficiency predictions were lower than the experimental results. Predicted location of turbine stall also corresponded well with experimental results. Potential causes for differences between the computational and experimental results are suggested. The computational model was then analysed at both high and low tip Mach number settings and also with and without the tip gap, and these results were discussed.

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