Utilization of Cascade Data in Axial-Flow Compressor Design and Analysis: A Critical Review

Abstract

Data from experimental research in plane and annular cascade facilities have been and are currently used extensively in aerodynamic design and analysis of axial-flow compressors. The information required and available for this application is reviewed and existing general correlations of data are discussed. A significant number of cascade test facilities are currently in operation, but most recent experiments have been limited in scope and have investigated either a proposed blade section profile over a small range of cascade configuration geometry, or a specific compressor flow phenomenon. Typical programs are discussed and evaluated. Although the future role of cascade experimentation is not clear, areas are noted which might be productive in development of advanced axial-flow compressor units with improved performance. The primary value of stationary cascade studies in improvement of understanding of flow in compressors is emphasized.