Particle-laden turbulent flow with transverse magnetic field in a vertical channel

Yohei Sato, Kishizawa Hiroshi, Koichi Hishida, Maeda Masanobu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Turbulence modification by dispersed particles in a vertical, fully-developed channel flow was investigated by loading soft magnetic particles and locally applying a magnetic field to the flow, so that the significant transverse particle motion was observed. The attracted particles to a hot wall were detached from it after losing their magnetism at the excess temperature over particle Curie point. The application of magnetic force realized the capability to control the local particle concentration of particles in the channel and their velocities. The experimental results showed that the suppression of turbulence intensities in the core region was observed at a mass loading ratio of 0.18 and turbulence was much attenuated near the wall at 0.7. For accurate modelling the turbulence modification in particle-laden flows, it has been necessary to understand important parameters dominating the modification level. Parameterization performed in the present investigation showed that the ratio of particle diameter to a characteristic length scale of turbulence classified whether turbulence was damped or enhanced. Turbulence attenuation or augmentation levels in dilute two-phase flows were correlated with the particle Reynolds number based on mean relative velocities and the ratio of total particle velocity variance to total turbulence intensity, which will be dominant parameters in modelling a source or sink term of turbulence kinetic energy.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
PublisherPubl by ASME
Pages93-100
Number of pages8
Volume180
ISBN (Print)0791813630
Publication statusPublished - 1994
EventProceedings of the 1994 ASME Fluids Engineering Division Summer Meeting. Part 9 (of 18) - Lake Tahoe, NV, USA
Duration: 1994 Jun 191994 Jun 23

Other

OtherProceedings of the 1994 ASME Fluids Engineering Division Summer Meeting. Part 9 (of 18)
CityLake Tahoe, NV, USA
Period94/6/1994/6/23

Fingerprint

Turbulent flow
Turbulence
Magnetic fields
Magnetism
Channel flow
Parameterization
Two phase flow
Kinetic energy
Reynolds number

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sato, Y., Hiroshi, K., Hishida, K., & Masanobu, M. (1994). Particle-laden turbulent flow with transverse magnetic field in a vertical channel. In American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED (Vol. 180, pp. 93-100). Publ by ASME.

Particle-laden turbulent flow with transverse magnetic field in a vertical channel. / Sato, Yohei; Hiroshi, Kishizawa; Hishida, Koichi; Masanobu, Maeda.

American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 180 Publ by ASME, 1994. p. 93-100.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sato, Y, Hiroshi, K, Hishida, K & Masanobu, M 1994, Particle-laden turbulent flow with transverse magnetic field in a vertical channel. in American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. vol. 180, Publ by ASME, pp. 93-100, Proceedings of the 1994 ASME Fluids Engineering Division Summer Meeting. Part 9 (of 18), Lake Tahoe, NV, USA, 94/6/19.
Sato Y, Hiroshi K, Hishida K, Masanobu M. Particle-laden turbulent flow with transverse magnetic field in a vertical channel. In American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 180. Publ by ASME. 1994. p. 93-100
Sato, Yohei ; Hiroshi, Kishizawa ; Hishida, Koichi ; Masanobu, Maeda. / Particle-laden turbulent flow with transverse magnetic field in a vertical channel. American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED. Vol. 180 Publ by ASME, 1994. pp. 93-100
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