Lampart, Piotr (2004) Numerical optimization of a high pressure steam turbine stage. JOURNAL OF COMPUTATIONAL AND APPLIED MECHANICS, 5 (2). pp. 311-321. ISSN 1586-2070
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Abstract
Blading of a high-pressure (HP) steam turbine stage is optimized using an idea of direct constraint optimization. The objective function to be minimized is the enthalpy loss of the stage. A simplex method of deformed polyhedron proposed by Nelder-Mead is used for optimization. Current values of the objective function are found from 3D Reynolds-averaged Navier Stokes (RANS) computations. To secure global flow conditions, there are constraints imposed on the mass flow rate, exit swirl angle, and reaction. The optimized parameters here are the stator and rotor blade numbers and stagger angles, rotor blade twist angle and parameters of stator blade compound lean at root and tip. Blade profiles are not changed. Optimization gives a design with new 3D stacking lines of the blades and increased flow efficiency, compared to the original design.
| Item Type: | Article |
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| Uncontrolled Keywords: | HP axial-flow turbine stage, blade shape optimization, simplex method, blade lean and twist, 3D RANS solver |
| Subjects: | T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 04 Oct 2025 21:01 |
| Last Modified: | 04 Oct 2025 21:01 |
| URI: | https://real.mtak.hu/id/eprint/226023 |
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