TY - JOUR
T1 - Assessment using CFD of the wind direction on the air discharges caused by natural ventilation of a poultry house
AU - Rojano, Fernando
AU - Bournet, Pierre Emmanuel
AU - Hassouna, Melynda
AU - Robin, Paul
AU - Kacira, Murat
AU - Choi, Christopher Y.
N1 - Publisher Copyright: © 2018, Springer Nature Switzerland AG.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Air inside poultry houses must be removed on a regular basis to prevent excess of heat, particles and noxious gases that can imperil animals. To cope with this issue, natural ventilation could be an effective method when assisted by accurate predictions. This study investigates air discharges caused by natural ventilation of a poultry house by means of a three-dimensional computational fluid dynamics (CFD) model. It solves the governing equations of momentum, heat and mass transport, radiative transfers and animal-generated heat. Wind directions of 0°, 36° and 56° (0° corresponds to a wind blowing perpendicular to the ridgeline) were investigated; the CFD model predictions achieved a RMSE of 1.2 °C and 0.6 g[H2O] kg−1 [dry air] for internal temperature and absolute humidity, respectively, when air blew with an angle of 36°. Air renewal rates (ARR) were 39.5 (± 1.9), 34.9 (± 2.2) and 33.6 (± 1.7) volumes of the building per hour, when air blew at 0°, 36° and 56°, respectively. Such ARR predictions served to know how the gases contained in air would likely spread downstream from the building in order to define regions of potentially high gas concentration that could endanger neighbouring habitable facilities.
AB - Air inside poultry houses must be removed on a regular basis to prevent excess of heat, particles and noxious gases that can imperil animals. To cope with this issue, natural ventilation could be an effective method when assisted by accurate predictions. This study investigates air discharges caused by natural ventilation of a poultry house by means of a three-dimensional computational fluid dynamics (CFD) model. It solves the governing equations of momentum, heat and mass transport, radiative transfers and animal-generated heat. Wind directions of 0°, 36° and 56° (0° corresponds to a wind blowing perpendicular to the ridgeline) were investigated; the CFD model predictions achieved a RMSE of 1.2 °C and 0.6 g[H2O] kg−1 [dry air] for internal temperature and absolute humidity, respectively, when air blew with an angle of 36°. Air renewal rates (ARR) were 39.5 (± 1.9), 34.9 (± 2.2) and 33.6 (± 1.7) volumes of the building per hour, when air blew at 0°, 36° and 56°, respectively. Such ARR predictions served to know how the gases contained in air would likely spread downstream from the building in order to define regions of potentially high gas concentration that could endanger neighbouring habitable facilities.
KW - Animal housing
KW - Gas dispersion
KW - Humidity
KW - Plume shape
KW - Ventilation rate
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U2 - 10.1007/s10661-018-7105-5
DO - 10.1007/s10661-018-7105-5
M3 - Article
C2 - 30430268
SN - 0167-6369
VL - 190
JO - Environmental Monitoring and Assessment
JF - Environmental Monitoring and Assessment
IS - 12
M1 - 724
ER -