Analysis of a Jet Attaching to an Offset Parallel Plate : (2nd Report, Influence of an Opposite Wall)

Abstract

One of the authors reported on the analysis for the oscillation of a jet attaching to an offset parallel plate, caused by the infinitesimal periodic fluctuation of bubble pressure. This paper presents the influence of the geometry of flow passage, especially an opposite wall, on a jet attaching to the side wall and switching phenomenon of the jet caused by traversing the opposite wall quasi-statically. Some of the conclusions are as follows. (1) Flow patterns can be classified into two types depending on the geometry of flow passage. (2) An analysis for an attached jet which is influenced by an opposite wall was carried out. The analytical results are in good agreement with the experimental ones. (3) Attachment and detachment of the jet show a hysteresis phenomenon when the offset distance of the side wall is varied quasi-statically.