Petrovic, M.; Riess, W.: Off-design flow analysis of low-pressure steam turbines. In: Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 211 (1997), Nr. 3, S. 215-224. DOI:
https://doi.org/10.1243/0957650971537123
Abstract: |
In this paper, a method for flow calculation in large steam turbines is presented. The method is based on the through-flow theory and the finite element procedure. It includes some extensions and improvements in the form of a new combination of loss correlation, radial distribution of losses and spanwise mixing, a new procedure for density calculation and an extension to encompass reverse meridional flow. The method is applied to the LP (low-pressure) part of a 165 MW steam turbine for which the flow field and performance over a wide range of mass flow and input pressure are calculated. The flow at far off-design loads, at which flow reversal behind the last stage occurs, and the last stage changes to ventilation are especially analysed. The comparison of numerical results with experimental data shows good correspondence. © IMechE 1997.
|
License of this version: |
Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. Dieser Beitrag ist aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich. |
Publication type: |
Article |
Publishing status: |
publishedVersion |
Publication date: |
1997 |
Keywords english: |
Flow analysis, Flow separation, Loss model, Off-design operation, Performance prediction, Reversal, Steam turbine, Calculations, Computational fluid dynamics, Density (specific gravity), Finite element method, Flow of fluids, Pressure effects, Off design conditions, Reverse meridional flow, Through flow theory, Steam turbines, flow analysis, mathematical modeling, steam turbine
|
DDC: |
620 | Ingenieurwissenschaften und Maschinenbau
|