CAVITATION AT PROPELLER BLADE SECTIONS

After mentioning existing knowledge of bubble dynamics in relation to propeller cavitation and its prediction, and the value of the experimental techniques now available, the Authors discuss the calculation of the behaviour of air and vapour bubbles in the pressure field of a hydrofoil (such as a propeller blade). It is assumed that, for this calculation of behaviour in a non-spherical pressure-field, the well-known theory for the dynamics and stability of a single bubble in a spherical time-dependent pressure-field can be applied. If the size distribution and the number of bubbles per unit volume in the inflow is known from experiment, the cavitation pattern in the low-pressure region on the suction side of the fail section can be calculated. Special attention should be paid to the quantity of bubbles becoming unstable in the foil pressure-field and thus contributing to real vapour-cavitation. The theory can, in principle, also be applied in calculating the pattern of propeller cavitation, and an important result for experimental work is that similarity rules for bubble-size distribution can be obtained by comparing full-scale and model flow. Order form: BSRA as No. 47,700.

  • Corporate Authors:

    Schroedter (C) and Company

    Stubbenhuk 10
    Hamburg 11,   Germany 
  • Authors:
    • Isay, W H
    • Lederer, L
  • Publication Date: 1977-9

Language

  • German

Media Info

  • Features: References;
  • Pagination: 8 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00173671
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM