3D CFD Analysis of Natural Ventilation in Reduced Scale Model of Compost Bedded Pack Barn for Dairy Cows

Compost bedded pack (CBP) barns have been receiving increased attention as an alternative housing system for dairy cattle. To create a satisfactory environment within CBP barns that promotes a good composting process, an adequate air movement and minimal temperature fluctuations throughout the build...

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Bibliographic Details
Published inApplied sciences Vol. 10; no. 22; p. 8112
Main Authors Damasceno, Flávio A., Taraba, Joseph L., Day, George B., A. O. Vega, Felipe, S. O. Rocha, Keller, Black, Randi A., Bewley, Jeffrey M., E. A. Oliveira, Carlos, Barbari, Matteo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2020
Subjects
Air flow
Air temperature
Aluminum
Analysis
Barns
Care and treatment
Compost
compost bedded pack barns
Composting
Composts
computational fluid dynamic
Computational fluid dynamics
Computer applications
Computer simulation
Computer-generated environments
Construction
Dairy barns
Dairy cattle
Design
Design and construction
Dimensional analysis
Farm buildings
Heat
Heating, cooling and ventilation
Housing
Indoor air quality
Livestock
Methods
natural ventilation
Reynolds number
roof design
Roofs
Scale models
Simulation
Technology application
Temperature requirements
Velocity
Ventilation
Wind
Wind direction
Brazil
United States > US
Kentucky
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Summary:Compost bedded pack (CBP) barns have been receiving increased attention as an alternative housing system for dairy cattle. To create a satisfactory environment within CBP barns that promotes a good composting process, an adequate air movement and minimal temperature fluctuations throughout the building are required. Therefore, a study based on compost barn structure model employing techniques of dimensional analysis for naturally ventilated buildings was developed. Three-dimensional computational fluid dynamic (CFD) simulations of compost barns with different ridge designs and wind direction, along with the visual demonstration of the impact on airflow through structure were performed. The results showed that the barn ventilation CFD model and simulations were in good agreement with the experimental measurements, predicting the airflow through the CBP barns structure for alternative roof ridge types adequately. The results also indicate that the best roof configuration in the winter was the open ridge with chimney for a west to east wind direction.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10228112