Wall Attachment Amplifier

  • Donald Bain
Part of the International Centre for Mechanical Sciences book series (CISM, volume 45)


The wall attachment amplifier makes use of the entrainment characteristics of a submerged fluid stream. Fig. 1 shows a subsonic jet diffusing as it issues from anozzle. The effects of a fluid stream flowing between boundary walls and emerging into a similar medium are shown in Fig. 2 (see page 12). The issuing jet entrains some of the surrounding fluid, lowering the pressure in the zone between the stream and the boundary walls, inducing a flow from the higher pressure region beyond the opening to maintain equilibrium.


Separation Bubble Power Stream Wall Angle Control Port Sample Switch 
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Copyright information

© Springer-Verlag Wien 1970

Authors and Affiliations

  • Donald Bain
    • 1
  1. 1.British Hydromechanics Research AssociationUK

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