Measurements and computations of room airflow with displacement ventilation

Xiaoxiong Yuan, Qingyan Chen, Leon R. Glicksman, Yongqing Hu, Xudong Yang

Research output: Journal article publicationConference articleAcademic researchpeer-review

127 Citations (Scopus)


This paper presents a set of detailed experimental data of room airflow with displacement ventilation. These data were obtained from a new environmental test facility. The measurements were conducted for three typical room configurations: a small office, a large office with partitions, and a classroom. The distributions of air velocity, air velocity fluctuation, and air temperature were measured by omnidirectional hot-sphere anemometers, and contaminant concentrations were measured by tracer gas at 54 points in the rooms. Smoke was used to observe airflow. The data also include the wall surface temperature distribution, air supply parameters, and the age of air at several locations in the rooms. A computational fluid dynamics (CFD) program with the Re-Normalization Group (RNG) κ-ε model was also used to predict the indoor airflow. The agreement between the computed results and measured data of air temperature and velocity is good. However, some discrepancies exist in the computed and measured concentrations and velocity fluctuation.

Original languageEnglish
Pages (from-to)PART 1/-
JournalASHRAE Transactions
Publication statusPublished - 1999
EventProceedings of the 1999 ASHRAE Winter Meeting - Chicago, IL, USA
Duration: 23 Jan 199927 Jan 1999

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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