Three-dimensional buoyant turbulent flows in a scaled model, slot-ventilated, livestock confinement facility

S. J. Hoff, Kevin A Janni, L. D. Jacobson

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A three-dimensional turbulence model was used to determine the effects of animal-generated buoyant forces on the airflow patterns and temperature and airspeed distributions in a ceiling-slot, ventilated, swine grower facility. The model incorporated the Lam-Bremhorst turbulence model for low-Reynolds Number airflow typical of slot-ventilated, livestock facilities. The predicted results from the model were compared with experimental results from a scaled-enclosure. The predicted and measured results indicated a rather strong cross-stream recirculation zone in the chamber that resulted in substantial three-dimensional temperature distributions for moderate to highly buoyancy-affected flows. Airflow patterns were adequately predicted for Arc > 40 and J values < 0.00053. For Arc < 40 and J values < 0.00053, the visualized patterns indicated that the jet separated from the ceiling before the opposing end-wall. This discrepancy was attributed to variations in the experimental and numerical inlet flow development assumptions.

Original languageEnglish (US)
Pages (from-to)671-686
Number of pages16
JournalTransactions of the American Society of Agricultural Engineers
Volume35
Issue number2
StatePublished - Mar 1 1992

Fingerprint Dive into the research topics of 'Three-dimensional buoyant turbulent flows in a scaled model, slot-ventilated, livestock confinement facility'. Together they form a unique fingerprint.

Cite this