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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Luft- und Raumfahrttechnik Multidisciplinary gradient-based optimization of radial turbines
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Multidisciplinary gradient-based optimization of radial turbines
Nicolas Lachenmaier (Broschiert, Englisch)
★★★★★
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Optischer Zustand
Beschreibung
This thesis deals with the design and improvement of a turbocharger's radial turbine. For this purpose, a custom automated optimization work flow is devised and applied to a radial turbine.
The method is multidisciplinary, i.e. a range of cost functions are implemented and used as either objectives or constraints: The polar moment of inertia, the wheel's mass and center of gravity, stresses, the… blade's eigenfrequencies, its response to a forced excitation, the turbine's efficiency and the delivered torque.
The applied optimization work flow uses gradient information to propose new design iterations. Using gradients in addition to plain function evaluations promises a drastic speed-up in the optimization process, in particular when high-dimensional design spaces are studied. The applied gradient calculation process involves determining surface sensitivities, which yield valuable insights for radial turbine designers as they display how geometrical changes affect the relevant cost functions.
Among the studied objectives and constraints, the forced response stands out as it marks a small novelty in the field of gradient-based radial turbine optimization: The wheel's response to a harmonic forced excitation utilizing an aeroacoustically motivated damping is studied. The applied method imposes little computational cost as a coupling to fluid simulations is avoided.
A number of optimization studies are conducted successfully to illustrate the potential of the gradient-based optimization work flow. The applied optimization work flows are capable of handling complex design problems, prove cost effective and reveal interesting insights into radial turbine design. The method is of industrial interest, which is underscored by the inclusion of commercial software. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
06.02.2023
Sprache
Englisch
EAN
9783844089349
Herausgeber
Shaker
Serien- oder Bandtitel
Forschungsberichte aus dem Institut für Gasturbinen, Luft- und Raumfahrtantriebe
Sonderedition
Nein
Autor
Nicolas Lachenmaier
Seitenanzahl
180
Auflage
1
Einbandart
Broschiert
-.-
★★★★★
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