Abstract
Air-distribution characteristics was discussed within a windowless type weanling piggery by using three dimensional, isothermal, turbulent k-e models introducing the term "volume porosity" and "surface permeability" which virtually presented the distributed solids such as porous ceiling and slotted floor in the piggery. The simulated results were compared with the observed data in the real weanling piggery, and then by using the simulation technique, air distribution in two pig raising rooms, havimg different ventilation systems such as negative and positive pressure, was compared from each other.HomePageKeywords: livestock housing, ventilation system, simulation, three dimensions, volume porosity, surface permeability, air-flow distribution