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Estimation of Flow Field Properties and Thrust Performances of Axisymmetric Plug - Nozzles using CFD Simulations

Bozic, Ognjan and Porrmann, Dennis (2010) Estimation of Flow Field Properties and Thrust Performances of Axisymmetric Plug - Nozzles using CFD Simulations. In: Turbulence, Heat and Mass Transfer Begell House, Inc., New York, Wallingford (UK). pp. 599-602. ISBN 978-1-56700-262-1.

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Official URL: http://dl.begellhouse.com/references/1bb331655c289a0a.html

Abstract

The objective of the presented work is to investigate the slipstream effects on the flow properties and thrust performances of a full-length and truncated annular plug nozzle of a small rocket launcher during a suborbital flight. The nozzle flow properties are investigated for three characteristics flow conditions (M∞ = 1.3, 2.59 and 9.7), using CFD simulations. When the rocket launcher flies through the atmosphere, the body geometry produces a slipstream with conditions in the nozzle area that are different from the undisturbed environment. The in-flight behavior of the truncated plug nozzles is complicated and affected also by recirculation regions that take place behind the shroud and plug base. In this paper special emphasis is given to investigate the slipstream effects between the hot exhaust plume from the rocket engine and the external coaxial supersonic/hypersonic air flow and their influence on the slope and position of different shocks generated in the separated flow region (realignment shocks, recompression shocks, plug base lip shock and trailing shocks). Also analyzed is the pressure distribution on the shroud base, spike supersonic ramp and spike base for closed-wake operations to determine the overall engine performance. The results of the numerical simulations confirm the altitude-compensating features of the annular truncated plug nozzles.

Item URL in elib:https://elib.dlr.de/95979/
Document Type:Contribution to a Collection
Title:Estimation of Flow Field Properties and Thrust Performances of Axisymmetric Plug - Nozzles using CFD Simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bozic, Ognjanognjan.bozic (at) dlr.deUNSPECIFIED
Porrmann, Dennisdennis.porrmann (at) dlr.deUNSPECIFIED
Date:2010
Journal or Publication Title:Turbulence, Heat and Mass Transfer
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:6
Page Range:pp. 599-602
Editors:
EditorsEmail
Hanjalic, K.Sapienza University of Rome
Nagano, Y.Nagoya Institute of Technology
Jakirlic, S.Darmstadt University of Technology
Publisher:Begell House, Inc., New York, Wallingford (UK)
ISBN:978-1-56700-262-1
Status:Published
Keywords:annular, truncated plug nozzles, aerospike, slipstream, in-flight behaviour
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Numerische Verfahren und Simulation
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Seyfried, Beate
Deposited On:16 Apr 2015 13:32
Last Modified:16 Apr 2015 13:32

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