Modeling of contaminant particle deposition and rebound in a vertical duct

Ke Sun, Lin Lu, Hai Jiang

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

Abstract

Particle - wall collision should be important in the simulation of particle deposition. In this paper, contaminant particle deposition and rebound or resuspension in a vertical duct are investigated by employing an algebraic rigid particle wall impact model. Eight particle size groups (0.01, 0.1, 0.5, 1, 5, 10, 60 and 100μm) ranging from 0.01 to 100μm are investigated. Detailed characteristic physical properties and phenomena of particle movement and impact are simulated and analyzed. A comparison between the current particle wall model and conventional trapped model shows that particle wall model is an important factor to affect the particle fate in ventilation duct, especially for larger particles. The deposition behavior exhibits a reverse phenomenon from smaller ones when the inlet velocity changes from low to high. Particle capture fraction vary differently with particle diameter and inlet velocity. Due to the algebraic expression of the particle wall impact model, it is efficient and robust for engineering application, such as HVAC duct.
Original languageEnglish
Title of host publicationProceedings of the 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010
Pages445-451
Number of pages7
Volume1
Publication statusPublished - 1 Dec 2010
Event2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010 - Hong Kong, Hong Kong
Duration: 1 Jun 20102 Jun 2010

Conference

Conference2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010
CountryHong Kong
CityHong Kong
Period1/06/102/06/10

Keywords

  • Contaminant particle
  • Deposition
  • Duct
  • Particle Wall impact
  • Rebound

ASJC Scopus subject areas

  • Building and Construction
  • Environmental Science(all)

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