Ratz, Johannes ; Leichtfuss, Sebastian ; Beck, Maximilian ; Fröhlig, Friedrich ; Schiffer, Heinz-Peter (2019)
Surge margin optimization of centrifugal compressors using a new objective function based on local flow parameters.
13th European Turbomachinery Conference. Lausanne, Switzerland (08.04.2019-12.04.2019)
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Nowadays, 3D-CFD design optimization of centrifugal compressors in terms of surge margin is one major unresolved issue. On that account, this paper introduces a new kind of objective function. The objective function is based on local flow parameters present at the design point of the centrifugal compressor. A centrifugal compressor with vaned diffuser is considered to demonstrate the performance of this approach. By means of a variation of the beta angle distribution of impeller and diffuser blade, 73 design variations are generated and several local flow parameters are evaluated. Finally, the most promising flow parameter is transferred into an objective function and an optimization is carried out. It is shown that the new approach deliver similar results as a comparable optimization with a classic objective function using two operating points for surge margin estimation, but with less computational effort since no second operating point near surge needs to be considered.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Ratz, Johannes ; Leichtfuss, Sebastian ; Beck, Maximilian ; Fröhlig, Friedrich ; Schiffer, Heinz-Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Surge margin optimization of centrifugal compressors using a new objective function based on local flow parameters |
| Sprache: | Englisch |
| Publikationsjahr: | 8 April 2019 |
| Veranstaltungstitel: | 13th European Turbomachinery Conference |
| Veranstaltungsort: | Lausanne, Switzerland |
| Veranstaltungsdatum: | 08.04.2019-12.04.2019 |
| URL / URN: | http://www.euroturbo.eu/publications/proceedings-papers/etc2... |
| Kurzbeschreibung (Abstract): | Nowadays, 3D-CFD design optimization of centrifugal compressors in terms of surge margin is one major unresolved issue. On that account, this paper introduces a new kind of objective function. The objective function is based on local flow parameters present at the design point of the centrifugal compressor. A centrifugal compressor with vaned diffuser is considered to demonstrate the performance of this approach. By means of a variation of the beta angle distribution of impeller and diffuser blade, 73 design variations are generated and several local flow parameters are evaluated. Finally, the most promising flow parameter is transferred into an objective function and an optimization is carried out. It is shown that the new approach deliver similar results as a comparable optimization with a classic objective function using two operating points for surge margin estimation, but with less computational effort since no second operating point near surge needs to be considered. |
| ID-Nummer: | ETC2019-212 |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Gasturbinen, Luft- und Raumfahrtantriebe (GLR) |
| Hinterlegungsdatum: | 15 Feb 2019 14:16 |
| Letzte Änderung: | 11 Mär 2020 08:22 |
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