Evaluating the Performance of a Low Reynold’s Number Turbulence Model for Describing Mixed-flow Airspeed and Temperature Distributions

Date
1995
Authors
Hoff, Steven
Janni, Kevin
Hoff, Steven
Jacobson, Larry
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Altmetrics
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Agricultural and Biosystems Engineering
Abstract

The effectiveness of a three-dimensional mixed-flow turbulence model describing airspeed and temperature distribution in a laboratory scale slot-ventilated chamber was evaluated. Airspeed and temperature profiles were investigated near the inlet jet region and along an axial line extending from the inlet. The observed jet-floor impingement location was accurately predicted, with a maximum difference of 18% (Dx/L = 0.18). Average building temperature as a function of the inlet corrected Archimedes Number was also accurately predicted. Differences between measured and predicted values were 5.0% or less. Airspeed and temperature profiles near the inlet and along an axial line from the inlet were compared and large localized errors were found.

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This article is from Transactions of the ASAE 38, no. 5 (1995): 1533–1541.

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