Interaction of Wake and Propulsive Jet Flow of a Generic Space Launcher-Reference-Cited by-同舟云学术

Interaction of Wake and Propulsive Jet Flow of a Generic Space Launcher

Published:2020-10-27 Issue: Volume: Page:129-143
ISSN:1612-2909
Container-title:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
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Short-container-title:

Author:

Barklage Alexander,Radespiel Rolf

Abstract

Abstract This work investigates the interaction of the afterbody flow with the propulsive jet flow on a generic space launcher equipped with two alternative nozzle concepts and different afterbody geometries. The flow phenomena are characterized by experimental measurements and numerical URANS and LES simulations. Investigations concern a configuration with a conventional truncated ideal contour nozzle and a configuration with an unconventional dual-bell nozzle. In order to attenuate the dynamic loads on the nozzle fairing, passive flow control devices at the base of the launcher main body are investigated on the configuration with TIC nozzle. The nozzle Reynolds number and the afterbody geometry are varied for the configuration with dual-bell nozzle. The results for integrated nozzles show a shift of the nozzle pressure ratio for transition from sea-level to altitude mode to significant lower levels. The afterbody geometry is varied including a reattaching and non-reattaching outer flow on the nozzle fairing. Investigations are performed at supersonic outer flow conditions with a Mach number of

$$Ma_\infty =3$$

. It turns out, that a reattachment of the outer flow on the nozzle fairing leads to an unstable nozzle operation.

Publisher

Springer International Publishing

Link

http://link.springer.com/content/pdf/10.1007/978-3-030-53847-7_8

Reference33 articles.

1. Barklage, A., Loosen, S., Schröder, W., Radespiel, R.: Reynolds number influence on the hysteresis behavior of a dual-bell nozzle. In: Proceedings of the 8th European Conference for Aerospace Sciences (EUCASS), pp. 1–11. EUCASS2019-519 (2019)

2. Barklage, A., Radespiel, R.: Influence of the boundary layer state on the transition of a dual-bell nozzle. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V. (2019)

3. Barklage, A., Radespiel, R., Génin, C.: Afterbody jet interaction of a dual-bell nozzle in supersonic flow. In: AIAA Propulsion and Energy Forum. American Institute of Aeronautics and Astronautics (2018). AIAA Paper 2018-4468

4. Bolgar, I., Scharnowski, S., Kähler, C.: Experimental analysis of the interaction between a dual-bell nozzle with an external flow field aft of a backward-facing step. In: Tagungsband des 21. DGLR-Fachsymposium der STAB, Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Deutsche Gesellschaft für Luft- und Raumfahrt, Cham, Switzerland, 2019 (2019)

5. Bolgar, I., Scharnowski, S., Kähler, C.J.: The effect of the mach number on a turbulent backward-facing step flow. Flow, Turbul. Combust., pp. 1–28 (2018)