Field measurements of boundary-layer flows in ventilated rooms

Jianshun Zhang, Robert A. MacDonald, C. Y. Shaw, Gemma Kerr, Lan C. Nguyen-Thi

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

20 Scopus citations

Abstract

Profiles of air velocity and turbulent kinetic energy near the surfaces of walls, ceilings, floors, and furnishings were measured under field conditions for four space layouts of an office building: a partitioned office room, a single office room, a small conference room, and a computer room. Three types of flows near the surfaces were identified based on the measured data: (1) near-stagnant flow that had mean velocities and turbulent kinetic energies of less than 0.05 ±0.025 m/s (10 ± 5 fpm) and 0.001 ± 0.001 (m/s)2 (38.75 ±38.75 (fpm)2], respectively; (2) weak turbulence flow that had mean velocities and turbulent kinetic energies from 0.05 ± 0.025 to 0.25 ± 0.05 m/s (10 ± 5 to 50 ± 10 fpm) and from 0.001 ± 0.001 to 0.01 ± 0.002 (m/s)2 (38.75 ± 38.75 to 387.5 ± 77.5 [fpm]2), respectively; and (3) strong turbulence flow that had velocities and turbulent kinetic energies higher than 0.25 ± 0.05 m/s (50 ± 10 fpm) and 0.01 ±0.002 (m/s)2 (387.5 ± 77.5 [fpm]2, respectively. The results are useful for establishing realistic airflow conditions in testing and modeling contaminant emission from building materials and indoor furnishings.

Original languageEnglish (US)
Title of host publicationASHRAE Transactions
PublisherASHRAE
Pages116-124
Number of pages9
Volume101
EditionPt 2
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1995 ASHRAE Annual Meeting - San Diego, CA, USA
Duration: Jun 24 1995Jun 28 1995

Other

OtherProceedings of the 1995 ASHRAE Annual Meeting
CitySan Diego, CA, USA
Period6/24/956/28/95

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Zhang, J., MacDonald, R. A., Shaw, C. Y., Kerr, G., & Nguyen-Thi, L. C. (1995). Field measurements of boundary-layer flows in ventilated rooms. In ASHRAE Transactions (Pt 2 ed., Vol. 101, pp. 116-124). ASHRAE.