Accession Number : AD0270764

Title :  

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : ARONOV,I.Z.

Report Date : 23 JAN 1962

Pagination or Media Count : 1

Abstract : Early turbulence in bent tubes or, conversely, an increased stability of the laminar regime was studied. The motion of water in brass coils and rubber pressure hoses of different diameters and radii of curvature at Reynolds numbers of 300-23,000 was investigated. The transition from a laminar regime to turbulent in bent tubes occurs at higher Reynolds numbers than in straight tubes. In the presence of a stabilized flow in bent tubes, the value of the critical Reynolds number is determined by the relative radius of curvature R/d. The values of the critical Reynolds numbers for ent tubes in a wide range of radii of curvature, including very small radii were obtained. (Author)

Descriptors :   *HILSCH TUBES, MATHEMATICAL ANALYSIS, MOTION, PIPES, REYNOLDS NUMBER, THEORY, TRANSLATIONS, TURBULENCE

Distribution Statement : APPROVED FOR PUBLIC RELEASE