An experimental and numerical investigation into the dispersion of powder from a pipe

Anjorin, Vao; Tang, Hao; Morgan, Anthony J.; Barton, I. E.

doi:10.1016/s0894-1777(03)00103-1

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Currently, laser Doppler techniques are used for capturing velocity, particle distribution and size accurately such as laser-Doppler velocimeter (LDV), laser phase Doppler particle anemometer (PDPA), or Particle Image Velocimetry (PIV) [5][6][7].…”

Section: Experimental Techniquesmentioning

confidence: 99%

Numerical and experimental investigation of the morphology development of expansion clouds by a powder jet flow

Tang

Anjorin

Morgan

et al. 2004

Fire Safety Journal

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Explosion suppression is often the preferred method of explosion attenuation in industry. The morphology development of suppression clouds is important for the design of necessary coverage of the product. This paper presents a numerical and experimental investigation of the growth of powder dispersion as it expands from a discharge nozzle. A Lagrangian stochastic particle-tracking approach and the RNG k-ε turbulence model are adopted in the flow field solver for the dispersed and

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Section: Experimental Techniquesmentioning

confidence: 99%

Numerical and experimental investigation of the morphology development of expansion clouds by a powder jet flow

Tang

Anjorin

Morgan

et al. 2004

Fire Safety Journal

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“…At 1.6 seconds after exiting the nozzle, the particles had entered into a fully turbulent flow pattern. Anjorin et al (2003) also found the particle mass concentration results show high levels of spherical particles were found at regions further from the central axis of the jet where lower particle velocities exist. Likewise, lower particle concentration levels were found near the jet axis where the particle velocities were much higher.…”

Section: Figure 25a Levy and Lockwood Experimental Mean Axial Gas mentioning

confidence: 67%

“…These values fit very closely with those in the research project for particle separation being performed. Anjorin et al (2003) found the particles exiting the pipe were still in a laminar style flow at a time interval of 0.1 seconds after leaving the nozzle in a cloud development. At a time interval of 0.4 seconds, it was found that the particle cloud had started to transition into the turbulent boundary layer.…”

Section: Figure 25a Levy and Lockwood Experimental Mean Axial Gas mentioning

confidence: 96%

Fine particle separation in a riser with flow modifications

Wimer¹

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Fine particle separation is of great interest in industry. Coal and mineral processing industries are currently very interested in particle separation for its potential in cleaning coal matter. A circulating fluidized bed riser system has been constructed to investigate possible separation of coal containing pyrite from clean coal. The system was constructed to operate using compressed air in which an air-solid mixture would pass through the riser and the solids would enter in to a dense, product, or filter collection bin. Several different variables were investigated during the project such as the collection ring wall height, particle entrance size into the riser, and mass flux of particles into the riser. By changing the particle entrance into the riser, and changing the ratio of nozzle flow and particle mass flux, a jet style flow could be achieved. The objective of this investigation was to observe how changing the flow field in a circulating fluidized bed would affect particle separation. The first experiment was conducted using a mixture of sand and steel shot with particles sizes between 250 and 500 micron. Results from using the sand and steel shot proved to be very promising as more than 90% of the steel shot could be collected from the sand. The results were then used to determine the experimental conditions that were to be used while separating pyrite laden coal particles from clean coal. There was approximately 1% initial pyrite in the mixture and size ranges for the particles were between 105 and 210 micron. The results using the run-of-mine coal were not as promising as those of the sand and steel shot as a maximum of 25% of the pyritic laden coal could be separated from the cleaner coal. A third experiment was then performed in which chunks of pure pyrite were crushed and then added into clean coal and run through similar separation conditions to the run-of-mine coal. The mixture contained 4% pyrite, and both the pure pyrite and clean coal size ranges were between 105 and 210 micron. The results from this test proved to be very good as up to 77% of the pure pyrite could be recovered from the clean coal.

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Cross-sectional profile and mass measurement of particulate solids

Fuchs

Zangl

Brasseur

ISA/IEEE Sensors for Industry Conference, 2004. Proceedings The

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An experimental and numerical investigation into the dispersion of powder from a pipe

Cited by 3 publications

References 4 publications

Numerical and experimental investigation of the morphology development of expansion clouds by a powder jet flow

Numerical and experimental investigation of the morphology development of expansion clouds by a powder jet flow

Fine particle separation in a riser with flow modifications

Cross-sectional profile and mass measurement of particulate solids

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