Heat source modelling and natural ventilation efficiency

The authors compared first the natural ventilation flows established by a range of heat source distributions at floor level, then demonstrated that modelling the ventilation flow driven by a uniformly distributed heat source is equivalent to the flow driven by a large number of localised sources. For the transient flow development in a room with a uniform heat distribution, a model has been developed then compared to existing ones for localised buoyancy inputs. Results are presented.