Using an implicit Finite-Volume Navier–Stokes code, the flow field in a Single Expansion Ramp Nozzle (SERN) for a hypersonic aircraft is studied. Comparisons between experimental data and CFD calculations for certain components of the integrated exhaust system (cold two-dimensional nozzle flow, high temperature reacting three-dimensional combustion chamber flow, and two-dimensional nozzle flow with external flow) are presented. To show the sensitivity of the considered components to off-design operating conditions, comprehensive numerical studies have been carried out. For the determination of nozzle performance a detailed two-dimensional analysis from transonic to hypersonic flight Mach numbers has been performed. A direct optimization method has been used to investigate the influence of the lower nozzle flap shape on the thrust vector.

Issue Section:
Gas Turbines: Aircraft
Topics:
Flow (Dynamics), Nozzles, Numerical analysis, Aircraft, Combustion chambers, Computational fluid dynamics, Design, Exhaust systems, Flight, High temperature, Mach number, Optimization, Shapes, Thrust
1.
Advanced Scientific Computing Ltd., 1992, “Theory Documentation,” Waterloo, Ontario, Canada.
2.
Bauer, A., Luda¨scher, M., and Rick, H., 1993, “Leistungsrechnung und Simulation des Betriebsverhaltens von Antriebssystemen fu¨r Hyperschallflugzeuge,” DGLR-Jahrestagung, Go¨ttingen, 28.9.–1.10.1993, 93-03-09.
3.
Detsch, F., 1993, “Untersuchungen an Du¨senmodellen, Bestimmung der Wanddruckverteilung und der Schubbeiwerte fu¨r eine Rechteckdu¨se,” Institut fu¨r Stro¨mungsmechanik Laboratorium Hochgeschwindigkeitswindkanal, TU-Dresden, Bad-Salzungen.
4.
Esch, Th., 1992, “Untersuchung des Stro¨mungsfeldes in einer Rechteckdu¨se,” Interner Institutsbericht LFA-ES-10/92, Lehrstuhl fu¨r Flugantriebe, TU-Mu¨nchen.
5.
Esch, Th., 1993a, “NS-Rechnungen zur Triebwerksstrahl Interferenz beim MTU-Heckmodell, Vergleich Experiment–Rechnung,” Interner Institutsbericht LFA-Es-2/93, LFA, TU-Mu¨nchen.
6.
Esch, Th., 1993b, “Berechnung schuboptimaler SERN-Du¨senkonturen mit Hilfe direkter Optimierungsverfahren,” Interner Institutsbericht LFA-Es-12/93, LFA, TU-Mu¨nchen.
7.
Herrmann, O., and Rick, H., 1991, “Propulsion Aspects of Hypersonic Turbo-Ramjet-Engines With Special Emphasis on Nozzle/Aftbody Integration,” ASME Paper No. 91-GT-395.
8.
Lederer, R., and Hertel, J., 1993, “Exhaust System Technology,” SPACE COURSE 1993, TU-Mu¨nchen.
9.
Niezgodka, J., 1993, “Druckverteilungsmessungen zur Simulation der Interferenz des Triebwerksstrahles auf das Heck der Sa¨nger-Unterstufe (MTU-Heckmodell),” Technical Report IB-39113-93C15, DLR-WT-WK, Ko¨ln.
10.
Schodl, R., 1993, DLR-SMAT, Ko¨ln, private communication.
11.
Stursberg, K., 1993, DLR-SMAT, Ko¨ln, private communication.
This content is only available via PDF.
Copyright © 1995
 by The American Society of Mechanical Engineers
You do not currently have access to this content.