Computational modelling of air mixing and ventilation in livestock buildings

A two page technical note discussing how a mathematical modelling technique known as Computational Fluid Dynamics (CFD) has been used to understand how air flows and mixes inside livestock buildings.

Year of Publication2010

Suitable ventilation is essential in most agricultural buildings, particularly when housing young livestock. To optimise ventilation, it is useful to be able to understand in detail how air flows into the building and then mixes within it. Computational Fluid Dynamics (CFD) is a computer-based mathematical technique used to simulate the behaviour of liquids and gases over a range of different conditions and variables. A CFD model to predict the ventilation behaviour of a real livestock building designed to house young calves has recently been developed. The model has been shown to reliably predict air flow and mixing when compared with actual data measured in the real building. It has shown that better ventilation can be achieved by using lower porosity ventilated cladding and that air flow occurs in discrete regimes within the building, with ventilation limited by the poorest regimes.

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Additional keywords/tags

farm buildingscattle shedsbuilding designagricultural engineering
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