Sensible heat transfer from the fowl: Boundary‐layer resistance of a model fowl

Abstract

1. The sensible heat transfer from a physical model of an adult fowl was investigated for the range of air speeds encountered in poultry houses in the United Kingdom, 0.09 to 2.7 m/s, equivalent to Reynolds numbers (Re) from 10³ to 3 × 10⁴. The Grashof number (Gr) range studied was from 6 x 10⁶ to 10⁷.

2. The pooled results were analysed to give a relationship between the Nusselt number (Nu) and Re in the mixed convective regime of: A combination of Nu, Re and Gr did not produce a better fit to the results.

3. Enhancement of heat transfer observed when Re was close to 10³ was probably caused by an interaction between the forced and natural air currents.

Notes

Present address: Department of Animal Husbandry, University of Bristol, Langford, Bristol, England.