...Sungho Yoon; Patricia Cargill Casing treatment is an advanced design feature intended to improve the stability of a compressor. Various investigations have been conducted based on both experimental and numerical studies at least over the last 50 years. In general, it has been demonstrated...

...Chunill Hah A compressor casing treatment with circumferential casing grooves (CCGs) is studied in detail. The primary objective of the current paper is to unearth the main driving fluid mechanism that changes the stall margin in a transonic compressor with CCGs. Large eddy simulation (LES...

...Matthew K. Oldfield; Alejandro Castillo Pardo; Cesare A. Hall Casing treatments are used to extend the stability margin of fans or compressors. These typically have an axisymmetric arrangement, but for a fan exposed to non-axisymmetric distortion, a casing treatment applied to a fraction...

...Dakun Sun; Jia Li; Xu Dong; Ruize Xu; Xiaofeng Sun A set of foam metal casing treatment (FMCT) has been investigated to assess the stability improvement and noise reduction on an axial compressor. Three FMCTs with different PPI (Pores Per Inch), 20, 35, and 50, are tested experimentally. Two...

... Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 21 11 2020 19 02 2021 19 02 2021 11 05 2021 compressor stall turbulence Reynolds stresses casing treatment Computational fluid dynamics (CFD...

... 01 02 2021 19 04 2021 stall margin improvement axial compressor casing treatment compressor stall computational fluid dynamics (CFD) The stable operating range of tip-critical axial compressors is limited by the magnitude of the near-casing blockage. For a high-speed...

.... A separation of the rotor suction side boundary layer is also observed at near stall conditions. Then, two approaches are tested in order to control these flows in the tip region. The first one is a casing treatment with nonaxisymmetric slots. The method showed a good ability to control the tip leakage flow...

...R. Emmrich; H. Hönen; R. Niehuis A casing treatment with axial and radial skewed slots ending in a plenum chamber has experimentally been investigated at a highly subsonic axial compressor stage. The aim was to investigate the physical phenomenon of this treatment family that is responsible...

...Xingen Lu; Wuli Chu; Junqiang Zhu; Yangfeng Zhang In order to advance the understanding of the fundamental mechanisms of axial skewed slot casing treatment and their effects on the subsonic axial-flow compressor flow field, the coupled unsteady flow through a subsonic compressor rotor and the axial...