Simulating particulate flow through curved duct by comparing tangential and normal velocities

Ke Sun, Lin Lu, Hanhui Jin, Yu Jiang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Particles, especially nano- And micro-particles, generated by combustion disperse in the air and form aerosol contaminants (e.g. PM10), which will affect human health and the living environment severely. This paper studies particle flow behavior including tangential and normal velocities in the curved duct in order to understand particle transportation for contaminant control. Computational Fluid Dynamics (CFD) tools together with user defined model were utilized. Through numerical analysis and modeling, it is found that the predicted particle tangential velocities can reach up to 1.3 times of bulk velocity at certain locations. They accelerate near the inner wall while decelerate near the outer wall. In contrast, particle normal velocities are only up to 0.17 of bulk velocity. They fluctuate more obviously than tangential velocity profile partly due to particle and wall materials and their interaction. The material effect mainly affects particle wall interaction, deposition, rebounding, and near wall velocities.
Original languageEnglish
Title of host publicationInternational Conference on Power Engineering 2013, ICOPE 2013
PublisherJapan Society of Mechanical Engineers
Publication statusPublished - 1 Jan 2013
EventInternational Conference on Power Engineering 2013, ICOPE 2013 - Wuhan, China
Duration: 23 Oct 201327 Oct 2013

Conference

ConferenceInternational Conference on Power Engineering 2013, ICOPE 2013
Country/TerritoryChina
CityWuhan
Period23/10/1327/10/13

Keywords

  • CFD
  • Curved duct
  • Normal velocity
  • Particle flow
  • Particle wall interaction
  • Tangential velocity

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Electrical and Electronic Engineering

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