Stodola's cone law

The Law of the Ellipse, or Stodola's cone law,^[1]^[2] is a method for calculating highly nonlinear dependence of extraction pressures with a flow for multistage turbine with high backpressure, when the turbine nozzles are not choked.^[3] It is important in turbine off-design calculations.

^ Timot Veer, Andreas Ulvestad, Olav Bolland, FRAME, a Tool for Predicting Gas Turbine Condition as well as Reability, Availability Performance Archived 2011-07-18 at the Wayback Machine, ASME/IGTI TURBOEXPO Conference 2004 June 14–17, Vienna, Austria, GT-2004-53770
^ TU Delft Cycle-Tempo, Reference guide^{[permanent dead link]}, tudelft.nl, accessed 2010-11-29
^ D. H. Cooke, On Prediction of Off-Design Multistage Turbine Pressures by Stodola's Ellipse, J. Eng. Gas Turbines Power, July 1985, Volume 107, Issue 3, 596 (11 pages), doi:10.1115/1.3239778

[1] Timot Veer, Andreas Ulvestad, Olav Bolland, FRAME, a Tool for Predicting Gas Turbine Condition as well as Reability, Availability Performance Archived 2011-07-18 at the Wayback Machine, ASME/IGTI TURBOEXPO Conference 2004 June 14–17, Vienna, Austria, GT-2004-53770

[2] TU Delft Cycle-Tempo, Reference guide^{[permanent dead link]}, tudelft.nl, accessed 2010-11-29

[3] D. H. Cooke, On Prediction of Off-Design Multistage Turbine Pressures by Stodola's Ellipse, J. Eng. Gas Turbines Power, July 1985, Volume 107, Issue 3, 596 (11 pages), doi:10.1115/1.3239778

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