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Theoretical Analysis of Compressible Flows in Ducts and Chambers at High Oscillating Pressures

Kriegseis, J. ; Marschall, Hubert ; Tropea, Cameron :
Theoretical Analysis of Compressible Flows in Ducts and Chambers at High Oscillating Pressures.
AIAA-2008-0788; 46th AIAA Aerospace Science Meeting and Exhibit; Reno, Nevada, USA
[Konferenz- oder Workshop-Beitrag], (2008)

Kurzbeschreibung (Abstract)

In this study an unsteady compressible-flow model is developed for a better prediction of the temporal pressure evolution in chambers and ducts at high oscillating pressures. Primary and secondary losses such as duct friction, stream diversion and Carnot-shock effects are included in the model paying close attention to the experimental rig\'\is setup. This paper contains a short review of the associated gas dynamics and then the conversion to a system of equations to be later implemented. The boundary conditions for the model, such as the case differentiation for subsonic- or sonic-duct flow are self-adjusting after each time step during the solution of the ODE describing the evolution of the chamber pressure. Due to the effective prediction of the temporal chamber pressure evolution, this model can be used to optimize rig-setup parameters for high-pressure conditions with unsteady character, thus reducing the development time of the actual experiment.

Typ des Eintrags: Konferenz- oder Workshop-Beitrag (Keine Angabe)
Erschienen: 2008
Autor(en): Kriegseis, J. ; Marschall, Hubert ; Tropea, Cameron
Titel: Theoretical Analysis of Compressible Flows in Ducts and Chambers at High Oscillating Pressures
Sprache: Englisch
Kurzbeschreibung (Abstract):

In this study an unsteady compressible-flow model is developed for a better prediction of the temporal pressure evolution in chambers and ducts at high oscillating pressures. Primary and secondary losses such as duct friction, stream diversion and Carnot-shock effects are included in the model paying close attention to the experimental rig\'\is setup. This paper contains a short review of the associated gas dynamics and then the conversion to a system of equations to be later implemented. The boundary conditions for the model, such as the case differentiation for subsonic- or sonic-duct flow are self-adjusting after each time step during the solution of the ODE describing the evolution of the chamber pressure. Due to the effective prediction of the temporal chamber pressure evolution, this model can be used to optimize rig-setup parameters for high-pressure conditions with unsteady character, thus reducing the development time of the actual experiment.

Buchtitel: AIAA-2008-0788; 46th AIAA Aerospace Science Meeting and Exhibit; Reno, Nevada, USA
Fachbereich(e)/-gebiet(e): Fachbereich Maschinenbau
Fachbereich Maschinenbau > Strömungslehre und Aerodynamik
Fachbereich Maschinenbau > Strömungslehre und Aerodynamik > Drag and Circulation Control
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Hinterlegungsdatum: 03 Sep 2010 11:03
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