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Converging-Diverging Nozzles with Constant-Radius Centerbody

Flock, Andreas K. and Gülhan, Ali (2018) Converging-Diverging Nozzles with Constant-Radius Centerbody. In: HISST: International Conference on High-Speed Vehicle Science Technology. HISST: International Conference on High-Speed Vehicle Science Technology, 26. - 29. November 2018, Moskau, Russland.

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Abstract

Several flow phenomena, such as recirculating wake flows or noise generation, occur in aerodynamic configurations with backward facing steps. In this context subsonic nozzles with constant-radius centerbodies exist, which enable fundamental research of these phenomena for M < 1. For the supersonic regime, however, the existing database and knowledge is limited. Therefore, the present work presents a design approach for a converging-diverging nozzle with constant-radius centerbody. For the nozzle throat, Sauer’s method is modified to include a centerbody. The method of characteristics is used for the subsequent supersonic portion. Comparing the analytical calculations to numerical simulations results in very good agreement and therefore underlines the feasibility of the chosen approach. Viscosity reduced the Mach number on the exit plane by 1.0 − 1.2% and therefore had little influence.

Item URL in elib:https://elib.dlr.de/126468/
Document Type:Conference or Workshop Item (Speech)
Title:Converging-Diverging Nozzles with Constant-Radius Centerbody
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Flock, Andreas K.andreas.flock (at) dlr.dehttps://orcid.org/0000-0002-0507-2420
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Date:November 2018
Journal or Publication Title:HISST: International Conference on High-Speed Vehicle Science Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Wind Tunnels, Method of Characteristics, Supersonic
Event Title:HISST: International Conference on High-Speed Vehicle Science Technology
Event Location:Moskau, Russland
Event Type:international Conference
Event Dates:26. - 29. November 2018
HGF - Research field:Energy
HGF - Program:other
HGF - Program Themes:E - no assignment
DLR - Research area:Energy
DLR - Program:E - no assignment
DLR - Research theme (Project):E - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Flock, Andreas
Deposited On:13 Feb 2019 09:23
Last Modified:13 Feb 2019 09:23

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