The lock-up phenomenon of exhaled flow in a stable thermally-stratified indoor environment

Qi Zhou, Hua Qian, Haigang Ren, Yuguo Li, Peter Vilhelm Nielsen

Research output: Contribution to journalJournal articleResearchpeer-review

15 Citations (Scopus)

Abstract

Highlights
•The lock-up phenomenon in thermally-stratified environment is explained using jet mechanics.
•Non-dimensional governing equations of buoyant jet are derived.
•The lock-up height of exhaled flow can be predicted by using a simple buoyant jet model.
•A smaller Ar number or a steeper temperature gradient leads to a lower lock-up height.
•Variation of lock-up height in different temperature gradients follows a power law relation.
Original languageEnglish
JournalBuilding and Environment
Volume116
Pages (from-to)246-256
ISSN0360-1323
DOIs
Publication statusPublished - 2017

Keywords

  • Exhaled flow
  • Buoyant jet
  • Temperature gradient
  • Jet mechanics
  • Dispersion

Fingerprint Dive into the research topics of 'The lock-up phenomenon of exhaled flow in a stable thermally-stratified indoor environment'. Together they form a unique fingerprint.

Cite this