Empirical validation of theoretical velocity fields into flanged circular hoods.
Previously presented theoretical models of the three-dimensional velocity field into a flanged circular hood, both with and without crossdraft, are examined by hot film anemometry. A final model with empirical modifications is selected and validated. Computer generated streamline maps, which enable visualization of the effects of crossdrafts on hood performance, are presented. The theoretical basis for capture efficiency using the model is discussed.
D008433:Mathematics; D008838:Microcomputers; D008962:Models, Theoretical; D012984:Software; D014691:Ventilation