The diffusers of centrifugal compressors can be divided to two classes: vaneless and vaned diffusers (see figure 1). Vaneless diffusers have a wider flow range but lower pressure recovery and...

Define vaneless. vaneless synonyms, vaneless pronunciation, vaneless translation, English dictionary definition of vaneless. blade in a wheel moved by air, steam, or water: A weather vane shows the direction of the wind.; someone who is changeable or fickle Not to be confused...

2020年3月12日 · The influence of four different vaneless diffuser shapes on the performance of centrifugal compressors is numerically studied in this paper. One of the studied shapes was a parallel wall diffuser. Two others had the width reduced only from hub and shroud and the rest had the width reduced from hub and shroud divided evenly.

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From vane +‎ -less. Without vanes. This page was last edited on 19 August 2024, at 03:29. Definitions and other text are available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to …

2021年3月31日 · The vaneless region is defined as the space between the impeller outlet and the vaned diffuser inlet. In this work, the studied ratio between the diffuser inlet and impeller outlet is from 1.06 to 1.20. The simulation results show that the variation in the vaneless region has a great impact on the performance of the compressor stage.

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2008年1月28日 · One-Dimensional Compressible Flow in Vaneless Diffusers of Radial or Mixed-Flow Centrifugal Compressors, Including Effects of Friction, Heat Transfer and Area Change

2013年9月24日 · Dean and Senoo first proposed a nonuniform jet-wake model for vaneless diffuser inlet flow and suggested that nonuniformity can affect flow behavior. Their theory predicted a significant, reversible work transfer between the jet and wake flows, leaving the impeller and entering the vaneless diffuser.

Two simple analyses are developed to predict losses in centrifugal compressor (or pump) vaneless diffusers: (a) One-dimensional, axisymmetric friction loss and (b) sudden-expansion mixing to account for losses in the diffuser caused by wakes of separated impeller blades.