Physical Transformation AtlasPTA
Constraint · constraint:betz-limit

Betz limit

An open rotor cannot capture more than 16/27 of the kinetic energy flux of the stream passing through its swept area; a system efficiency on another basis is not compared with it.

Atlas record: 1 claim references this constraint — 1 established.

Explorerelations · sources · cite

C_p ≤ 16/27 ≈ 59.3% of the kinetic power through the rotor disc

1claims0enumerated routes0routes with complete-composition evidence0candidate routes not searched2cited sources

Relations

bounded by · 1
Aerodynamic and hydrodynamic lift—bounded by→Betz limitestablished
  • open rotor without a duct

Cited sources · 2

  1. [1]
    A. Betz. Das Maximum der theoretisch möglichen Ausnützung des Windes durch Windmotoren (1920)
    Zeitschrift für das gesamte Turbinenwesen 26, 307–309 · paper, no DOI · record
  2. [2]
    S. L. Dixon, C. A. Hall. Fluid Mechanics and Thermodynamics of Turbomachinery (7th ed.) (2014)
    Butterworth-Heinemann · doi:10.1016/C2011-0-05059-7 · crossref ✓ 2026-09-19 · record

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Physical Transformation Atlas (2026). entity constraint:betz-limit: Betz limit. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/e/constraint/betz-limit

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