This paper presents the results of an extensive set of measurements on a 35%-scale model of an exhaust diffuser for gas turbines. The diffuser is of the straight-wall annular-axial type, typically employed in small-to-medium size gas turbines. It features six high-solidity struts, which support, in the real machine, one of the shaft bearings and have piping for oil supply inside. The instrumentation, the movement of the measurement point, and data acquisition system have been designed for automatic running of the tests. For four test sections, contour plots are produced of average velocity components, flow angle and turbulence quantities as three components of the Reynolds stress tensor.
Flow and turbulence Survey for a Model of Gas Turbine Exhaust Diffuser
DESIDERI, UMBERTO;
1995-01-01
Abstract
This paper presents the results of an extensive set of measurements on a 35%-scale model of an exhaust diffuser for gas turbines. The diffuser is of the straight-wall annular-axial type, typically employed in small-to-medium size gas turbines. It features six high-solidity struts, which support, in the real machine, one of the shaft bearings and have piping for oil supply inside. The instrumentation, the movement of the measurement point, and data acquisition system have been designed for automatic running of the tests. For four test sections, contour plots are produced of average velocity components, flow angle and turbulence quantities as three components of the Reynolds stress tensor.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
