Evaluating RNG k-[epsilon] models using PIV data for airflow in animal buildings at different ventilation rates.(Particle image velocimetry)

ASHRAE Transactions | January 1, 2007| | Copyright

ABSTRACT

PIV data were used to evaluate a renormalization group (RNG) k-[epsilon] turbulence model of airflow in a full-scale test room (5.5 x 3.7 x 2.4 m [18.0 x 12.1 x 7.9 ft]) using FLUENT software. Three typical ventilation cases with ventilation rates of 0.12, 0.26, and 0.90 [m.sup.3]/s (250, 560, and 1900 cfm), which are equivalent to inlet Reynolds numbers of 2300, 5500, and 16,000, were evaluated for airflow patterns and air distribution. The RNG k-[epsilon] turbulence model predicted airflow patterns, air distributions, and air velocities similar to PIV data ...

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