Modelling of animal occupied zones in CFD
作者： Li Rong , Khem R. Gautam , Ahsan Iqbal , Guogiang Zhang
DOI: 10.1016/J.BIOSYSTEMSENG.2021.01.022
关键词:
摘要: Methods to model animal occupied zones in computational fluid dynamics (CFD) for predictions of air properties are explored. The study was based on CFD analysis supported by experimental validation. Animal zone (AOZ) modelled as a porous media reduce the cost. Here, two ways. first with constant and uniform values porous-resistance coefficients throughout AOZ called porous-media method (POM), second resistance considered according spatial location occupants profiled-porous-media (PPOM). For POM, sub-study required estimate coefficients. PPOM, resistances were infinite at spatial-locations but elsewhere zero – no separate estimating required. Results simulations both POM PPOM compared when animals present AOZ. It concluded that it is possible or PPOM. However, layout dependent estimation will always be each single layout. Moreover, under-predicted average velocities On other hand, there benefits Firstly, secondly gave more realistic Average temperatures accurately predicted
sci-hub.st 参考文章(20)
Kyeong-seok Kwon, In-bok Lee, G. Qiang Zhang, Taehwan Ha, Computational fluid dynamics analysis of the thermal distribution of animal occupied zones using the jet-drop-distance concept in a mechanically ventilated broiler house Biosystems Engineering. ,vol. 136, pp. 51- 68 ,(2015) , 10.1016/J.BIOSYSTEMSENG.2015.05.008
Bjarne Bjerg, CFD Analyses of Methods to Improve Air Quality and Efficiency of Air Cleaning in Pig Production. InTech. ,(2011) , 10.5772/19302
K.G. Gebremedhin, B.X. Wu, Characterization of flow field in a ventilated space and simulation of heat exchange between cows and their environment Journal of Thermal Biology. ,vol. 28, pp. 301- 319 ,(2003) , 10.1016/S0306-4565(03)00007-X
L. Rong, D. Liu, E.F. Pedersen, G. Zhang, The effect of wind speed and direction and surrounding maize on hybrid ventilation in a dairy cow building in Denmark Energy and Buildings. ,vol. 86, pp. 25- 34 ,(2015) , 10.1016/J.ENBUILD.2014.10.016
Robert Albert Greenkorn, Flow Phenomena in Porous Media: Fundamentals and Applications in Petroleum, Water, and Food Production ,(1983)
T. Boulard, S. Wang, Experimental and numerical studies on the heterogeneity of crop transpiration in a plastic tunnel Computers and Electronics in Agriculture. ,vol. 34, pp. 173- 190 ,(2002) , 10.1016/S0168-1699(01)00186-7
Wentao Wu, John Zhai, Guoqiang Zhang, Peter V. Nielsen, Evaluation of methods for determining air exchange rate in a naturally ventilated dairy cattle building with large openings using computational fluid dynamics (CFD) Atmospheric Environment. ,vol. 63, pp. 179- 188 ,(2012) , 10.1016/J.ATMOSENV.2012.09.042
Bjarne Bjerg, Giovanni Cascone, In-Bok Lee, Thomas Bartzanas, Tomas Norton, Se-Woon Hong, Il-Hwan Seo, Thomas Banhazi, Paolo Liberati, Alvaro Marucci, Guoqiang Zhang, Modelling of ammonia emissions from naturally ventilated livestock buildings. Part 3: CFD modelling Biosystems Engineering. ,vol. 116, pp. 259- 275 ,(2013) , 10.1016/J.BIOSYSTEMSENG.2013.06.012
J.C. Roy, T. Boulard, CFD PREDICTION OF THE NATURAL VENTILATION IN A TUNNEL-TYPE GREENHOUSE: INFLUENCE OF WIND DIRECTION AND SENSIBILITY TO TURBULENCE MODELS Acta Horticulturae. pp. 457- 464 ,(2005) , 10.17660/ACTAHORTIC.2005.691.55
Kjeld Svidt, S. Morsing, B. Bjerg, G. Zhang, A Study on the Characteristics of Airflow in a Full Scale Room with a Slot Wall Inlet Beneath the Ceiling A Study on the Characteristics of Airflow in a Full Scale Room with a Slot Wall Inlet Beneath the Ceiling. pp. 199- 204 ,(2000)