Articles | Volume 11, issue 2
https://doi.org/10.5194/wes-11-619-2026
https://doi.org/10.5194/wes-11-619-2026
Peer-reviewed comment
 | 
19 Feb 2026
Peer-reviewed comment |  | 19 Feb 2026

Comment on “Glauert's optimum rotor disk revisited – a calculus of variations solution and exact integrals for thrust and bending moment coefficients” by Tyagi and Schmitz (2025)

J. Gordon Leishman

Cited articles

Tyagi, D. and Schmitz, S.: Glauert's optimum rotor disk revisited – a calculus of variations solution and exact integrals for thrust and bending moment coefficients, Wind Energ. Sci., 10, 451–460, https://doi.org/10.5194/wes-10-451-2025, 2025a. 
Tyagi, D. and Schmitz, S.: Amendment to Glauert's Optimum Rotor Disk Solution, AIAA Conference Publication, https://doi.org/10.2514/6.2024-84552, https://arc.aiaa.org/doi/pdf/10.2514/6.2024-84552 (last access: 8 February 2026), 2025b. 
Short summary

This comment clarifies the behavior of the one-dimensional momentum model used by Tyagi and Schmitz in the high- and low-tip-speed-ratio limits, explains the torque–power constraint in the limit λ→∞, states where model assumptions do not hold when equations are continued outside their domain, and notes reproducibility and citation issues.

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