CAVITATION AND CERTAIN PROBLEMS IN HYDRODYNAMICS (KAVITATSIYA I NEKOTORYE ZADACHI GIDRODINAMIKI),
Abstract
As a rule, cavitation occurs with the movement of a body in a drop form liquid at a high velocity (of the order of 30 meters/sec and higher). The article first discusses the reasons for cavitation and the conditions under which it appears. It is demonstrated that, among other factors, the appearance of cavitation depends on the turbulent fluctuations of the pressure in the boundary layer near the wall. It next discusses the effect of the roughness of a surface on the start of cavitation. Here it is pointed out that, in certain experiments, cavitation was observed to start at rarefaction coefficients considerably below the critical. The remainder of the article is devoted to a general discussion of: cavitation erosion, cavitation noise, two-phase mixtures and the hypothesis of an isothermally compressible fluid, developed cavitation flows and general mechanical theories, the theory of the action of vaned mechanisms and machines under supercavitation conditions, and the hydrodynamics of vapor-water mixtures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 20, 1967
- Accession Number
- AD0674333
Entities
People
- V. M. Ivchenko
Organizations
- National Air and Space Intelligence Center