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Efficiency Scaling: Influence of Reynolds and Mach Numbers on Fan Performance

Pelz, Peter F. ; Saul, Sebastian ; Brötz, Johannes (2022)
Efficiency Scaling: Influence of Reynolds and Mach Numbers on Fan Performance.
In: Journal of Turbomachinery, 144 (6)
doi: 10.1115/1.4053172
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

The efficiency, pressure ratio, and shaft power of a fan depends on type, size, working medium, and operating condition. For acceptance tests, a dissimilarity in Reynolds number, Mach number, relative roughness, and relative blade tip clearance of the scaled model and prototype is unavoidable. Hence, the efficiency differs between model and prototype. This difference is quantified by scaling methods. This article presents a validated and physics based, i.e., reliable scaling method for the efficiency, pressure ratio, and shaft power of axial and centrifugal fans operating at subsonic conditions. The method is validated using test results gained on standardized test rigs for different fan types, sizes, and operating conditions. For all scenarios, the presented scaling method provides a much reduced scaling uncertainty compared to the reference method described in ISO 13348.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Pelz, Peter F. ; Saul, Sebastian ; Brötz, Johannes
Art des Eintrags: Bibliographie
Titel: Efficiency Scaling: Influence of Reynolds and Mach Numbers on Fan Performance
Sprache: Englisch
Publikationsjahr: 2022
Verlag: ASME
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Turbomachinery
Jahrgang/Volume einer Zeitschrift: 144
(Heft-)Nummer: 6
Kollation: 12 Seiten
DOI: 10.1115/1.4053172
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Kurzbeschreibung (Abstract):

The efficiency, pressure ratio, and shaft power of a fan depends on type, size, working medium, and operating condition. For acceptance tests, a dissimilarity in Reynolds number, Mach number, relative roughness, and relative blade tip clearance of the scaled model and prototype is unavoidable. Hence, the efficiency differs between model and prototype. This difference is quantified by scaling methods. This article presents a validated and physics based, i.e., reliable scaling method for the efficiency, pressure ratio, and shaft power of axial and centrifugal fans operating at subsonic conditions. The method is validated using test results gained on standardized test rigs for different fan types, sizes, and operating conditions. For all scenarios, the presented scaling method provides a much reduced scaling uncertainty compared to the reference method described in ISO 13348.

Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006)
16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006) > Nachhaltige Kraft- und Arbeitssysteme
Hinterlegungsdatum: 02 Jul 2024 23:13
Letzte Änderung: 02 Jul 2024 23:13
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