Condensing nozzle flows: Ludwieg tube experiments and numerical/theoretical modelling.

The present paper deals with homogeneously condensing flows of humid nitrog en in a Laval nozzle. The modelling of nonequilibrium condensation phenomen a can be separated in two distinct processes: homogeneous nucleation and dr oplet growth. Our objective is to investigate the quality of a condensation model characterised by the following combination: the (corrected) Internal ly Consistent Classical Theory for the nucleation process and a generalised transitional growth model, with the droplet temperature calculated explici tly via the wet-bulb equation. Oar theoretical predictions have been then, compared with our experimented results on droplet sizing showing a good agr eement.