A Computational Fluid Dynamics Model of Biological Heat and Gas Generation in a Dairy Holding Area
| Autor: | Brian D. Luck, Mario R. Mondaca, Jessica L. Drewry, Christopher Y. Choi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
Moisture Petroleum engineering business.industry Airflow Airspeed Biomedical Engineering Mixing (process engineering) Soil Science Forestry 04 agricultural and veterinary sciences Computational fluid dynamics 01 natural sciences Mixing patterns Greenhouse gas 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science business Porous medium Agronomy and Crop Science 0105 earth and related environmental sciences Food Science |
| Zdroj: | Transactions of the ASABE. 61:449-460 |
| ISSN: | 2151-0040 |
| DOI: | 10.13031/trans.12394 |
| Popis: | The design and operation of ventilation systems for animal housing is a crucial component in maintaining a suitable environment for both animals and workers by removing heat, moisture, and gas species. However, important design and operational criteria, such as profiles of velocity and extent of mixing within animal housing, can be difficult to study experimentally. Thus, a computational fluid dynamics (CFD) model of a commercial dairy holding area, including the generation of transport of heat and gas species within the domain, was developed. The animal-occupied zone (AOZ) was modeled using porous media. The model was evaluated with experimental data of velocity and gas concentration. Results indicated that the airflow uniformity and air speed could be increased within the holding area by modifying the configuration of the side curtain openings and using concrete walls to guide airflow; a 20% increase in average velocity within the AOZ was achieved. Results of the CFD model have shown it to be an effective tool for gaining insight into the complex mixing patterns within holding areas to improve the design of animal housing. Keywords: Animal-occupied zone, Computational fluid dynamics, Greenhouse gas emissions, Holding area. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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