Comparative Study of Subsynchronous Rotating Flow Patterns in Centrifugal Compressors with Vaneless Diffusers

Comparative Study of Subsynchronous Rotating Flow Patterns in Centrifugal Compressors with Vaneless Diffusers
Author: P. Frigne
Publisher:
Total Pages: 17
Release: 1982
Genre:
ISBN:

A comparative experimental investigation of the unstable operating modes of a centrifugal compressor is made. Hot wire measurements, in two different compressor configurations, allowed to distinguish between the different unsteady flow pattern. Impeller and/or diffuser rotating stall has been observed, depending on the flow conditions. The measured relative rotational speed of this perturbation is cross-checked with other experimental data and it is shown that the rotational speed is strongly dependent on the type of rotating stall. The diffuser absolute inlet flow angle at the onset of diffuser rotating stall agrees well with the value predicted by an existing stability criterion.

Design and Analysis of Centrifugal Compressors

Design and Analysis of Centrifugal Compressors
Author: Rene Van den Braembussche
Publisher: John Wiley & Sons
Total Pages: 609
Release: 2019-01-14
Genre: Technology & Engineering
ISBN: 1119424100

A comprehensive overview of fluid dynamic models and experimental results that can help solve problems in centrifugal compressors and modern techniques for a more efficient aerodynamic design. Design and Analysis of Centrifugal Compressors isacomprehensive overview of the theoretical fluid dynamic models describing the flow in centrifugal compressors and the modern techniques for the design of more efficient centrifugal compressors. The author — a noted expert in the field, with over 40 years of experience — evaluates relevant numerical and analytical prediction models for centrifugal compressors with special attention to their accuracy and limitations. Relevant knowledge from the last century is linked with new insights obtained from modern CFD. Emphasis is to link the flow structure, performance and stability to the geometry of the different compressor components. Design and Analysis of Centrifugal Compressors is an accessible resource that combines theory with experimental data and previous research with recent developments in computational design and optimization. This important resource Covers the basic information concerning fluid dynamics that are specific for centrifugal compressors and clarifies the differences with axial compressors Provides an overview of performance prediction models previously developed in combination with extra results from research conducted by the author Describes helpful numerical and analytical models for the flow in the different components in relation to flow stability, operating range and performance Includes the fundamental information for the aerodynamic design of more efficient centrifugal compressors Explains the use of computational fluid dynamics (CFD) for the design and analysis of centrifugal compressors Written for engineers, researchers and designers in industry as well as for academics specializing in the field, Design and Analysis of Centrifugal Compressors offers an up to date overview of the information needed for the design of more effective centrifugal compressors.