Rotating stall in blade rows operating in shear flow. II - The case of shear flow with piecewise linear velocity profile

A theory for unsteady small perturbations in a shear flow with an arbitrary, but piecewise linear, velocity profile has been developed. Based on this, rotating stall in three-dimensional blade rows, subjected to a spanwise sheared inlet flow, is examined. With the total pressure loss characteristics...

Full description

Saved in:
Bibliographic Details
Published in:Bulletin of the JSME 1984-03, Vol.27, p.411-418
Main Authors: Sasaki, I, Takata, H
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A theory for unsteady small perturbations in a shear flow with an arbitrary, but piecewise linear, velocity profile has been developed. Based on this, rotating stall in three-dimensional blade rows, subjected to a spanwise sheared inlet flow, is examined. With the total pressure loss characteristics known from experiment, calculations show the effect of flow shear and the spanwise total pressure loss distribution upon various aspects of rotating stall, e.g., the onset condition, the propagation velocity and the distribution of disturbances. The effect of the blade aspect ratio is also discussed.
ISSN:0021-3764