| Autor: |
Kevin Cremanns, Christian Musch, Simon Hecker, Andreas Penkner |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
European Conference on Turbomachinery Fluid Dynamics and hermodynamics. |
| ISSN: |
2410-4833 |
| DOI: |
10.29008/etc2017-280 |
| Popis: |
In this study a strategy for a 3D optimisation of the exhaust of a low pressure (LP) steam turbine is presented. The ?ow domain utilized consists of both the last stage and the exhaust diffuser. The optimisation is done with the help of a hybrid surrogate model for the diffuser ?ow. In the ?rst part of the paper a numerical model and its validation is presented, which allows for a precise simulation of the diffuser ?ow including the actual 3D geometry. The second part describes the optimisation procedure and the necessary simpli?cations applied to this model in order to get a numerical setup that is fast enough to actually perform a design study with roughly 200 design variants within a feasible time. This model is used afterwards to create a surrogate model. Based on this meta model an optimisation is carried out and ?nally scrutinzed with a ?ow simulation of the whole exhaust hood. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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