Accession Number:

ADP012085

Title:

Supercavities in Compressible Fluid

Descriptive Note:

Corporate Author:

CENTRAL AERODYNAMIC INST (TSAGI) MOSCOW(RUSSIA)

Personal Author(s):

Report Date:

2001-02-01

Pagination or Media Count:

29.0

Abstract:

The basic results obtained by the author in the theory of supercavities in compressible fluid have been presented. Some peculiarities of the theoretical methods application for the supersonic flows and their difference from the analogous flows in air have been noted. The basic correlations for the shock waves in the water are considered. Axissymetric supercavities in sub- and supersonic compressible fluid have been researched using the asymptotic method. An integro-differential equation for the cavity profile was deduced. The outer solution was found and for the thin cone-cavitators the solution was obtained for the whole area of the flow. Based of the modem numerical methods the algorithm calculation of axisymmetric cavities in sub- and supersonic compressible fluid flow has been worked out. The results of calculation of axysimmetric supercavities downstream of a disk within the range of the Mach numbers 0 - M - 1.4 have been represented. As a result of the analysis for the different Mach numbers the following was defined the cavitation number, the cavitation drag ratio, the mid-section radius, the cavity shape, the distance of shock wave from a disk for supersonic flow. The conical flows in a supersonic water stream have been calculated by the numerical method. The results obtained by the author have been compared with the known experimental and theoretical results of other investigations.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE