Accession Number : AD0636298

Title :   CALCULATION OF THE DISCHARGE CHARACTERISTICS OF NOZZLE CASCADES.

Descriptive Note : ATD work assignment no. 88.

Corporate Author : AEROSPACE TECHNOLOGY DIV LIBRARY OF CONGRESS WASHINGTON D C

Personal Author(s) : Filippov, G. A. ; Pryakhin,V. V.

Report Date : 16 MAR 1966

Pagination or Media Count : 17

Abstract : Methods are proposed for calculating the effect of various geometric and regime parameters of cascades and also of the steam moisture content on the discharge characteristics of turbine stages. The author makes the following conclusions: (1) The discharge coefficients, determined theoretically from the change in the relative thickness of the exit edges of nozzles and also from the geometrical flow exit angle, pressure ratio at the nozzle, and the relative blade heights, are in good agreement with experimental data and, therefore, the method described in this article may be recommended for paractical application. (2) In nozzles of a single-stage turbine, subcooling of the steam flow occurs independently of the initial liquid content in steam. (3) The change in the relative thickness and height of the exit edges of nozzles quantitatively affect differently the change in the discharge coefficients for superheated and the wet steam. (Author)

Descriptors :   (*GAS DISCHARGES, *TURBINES), MATHEMATICAL ANALYSIS, NOZZLES, CASCADE STRUCTURES, USSR

Subject Categories : Fluid Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE