Single-sided natural ventilation through a velux roof window

Li Z., Nielsen P.V., Fransson J.
computational fluid dynamics, wind effect, natural ventilation
Year:
2004
Bibliographic info:
RoomVent 2004, 9th international conference in University of Coimbra - Portugal, 5-8th september 2004, pp 4, 7 Fig.., 4 Ref.

This paper investigates the single-sided natural ventilation through a VELUX centre pivot roof window under natural weather conditions. The aim of the investigation is to develop an empirical formulation for air flow rate through a roof window based on CFD and tracer gas decay measurement methods. CFD can separate buoyancy and wind effects in the calculation of the air flow rate through a window opening, but it is difficult to isolate wind effect from buoyancy forces during measurements. The -Warren-plot- method can be used to separate and analyse the measured data which are dominated by stack effect

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