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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Luft- und Raumfahrttechnik Transient Behaviour Modelling of Liquid Rocket Engine Components
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Transient Behaviour Modelling of Liquid Rocket Engine Components
Chiara Manfletti (Gebundene Ausgabe, Englisch)
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Beschreibung
Given the increased power of today's computers, mare frequent use is made of CFD codes to perfarm detailed assessments of the flow behaviour in single engine components. The goal is to understand observed variations in fluid properties and to find the source of unexpected behaviours. Such CFD methods however require extensive computational tim es, rendering impossible speedy parametric studies.… Additionally, most require long input preparation tim es. Although the qualities of a thorough and in full-depth analysis may be desirable in the study of specific single components and scenarios, for complex, multi-component systems, the long computational times become insurmountable.
An intelligent simplification of the underlying processes allows the reduction of the governing partial differential equations to ardinary differential equations which no longer require complex solution methods thus allowing much faster computational times. Results obtained from such studies rely significantly on imposed initial and boundary conditions. Simplifications introduced in the latter often lead to an incarrect transient behaviour which does not correspond to that measured and observed. This is, amongst other reasons, due to the ignared interaction between downstream and upstream Iying components. Tools concentrating on one component only are thus not sufficient as they do not help in understanding how components affect each other during transient phases, what their impact on system frequencies is, and how this interaction may lead to a major component or system failure.
To this purpose the present work was initiated with the aim of clarifying single component behaviour during transient phases when these are integrated in complex multi-component systems and to develop a programme for the simulation of such phases with minimal total computational tim es. Programme requirements set were as follows:
1. minimal computational time - for quick turnover and parametric studies
2. simplified boundary conditions
3. flexible input layout
4. flexible programme structure: modularity
5. easy convergence Dieses Produkt haben wir gerade leider nicht auf Lager.
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Technische Daten
Erscheinungsdatum
01.03.2010
Sprache
Englisch
EAN
9783832288785
Herausgeber
Shaker
Serien- oder Bandtitel
Berichte aus der Luft- und Raumfahrttechnik
Sonderedition
Nein
Autor
Chiara Manfletti
Seitenanzahl
181
Auflage
1
Einbandart
Gebundene Ausgabe
Schlagwörter
lumped parameter modeling, transient behaviour, moliere, liquid rocket engines
Thema-Inhalt
TRP - Luft- und Raumfahrttechnik
Höhe
210 mm
Breite
14.8 cm
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