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Steady aerodynamics flow analysis for determining the necessary build space of an isolated jet shear layer

Jente, Christian (2021) Steady aerodynamics flow analysis for determining the necessary build space of an isolated jet shear layer. EU H2020 1st DJINN Conference: Industrially oriented jet noise reduction technologies, 01.-03. Dez. 2021, Brüssel, Belgien.

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Abstract

It is rather difficult to characterize the geometry of multi-body multi-flow problems, such as jet-flap interaction. Even the 1D similarities are not obvious. Therefore, a clear measurement hypothesis cannot be formulated and measurement results are harder to interpret. The solution to this problem is the study of the near field geometry of the isolated jet shear layer. Its geometry can be modelled with the help of the virtual shear layer origin, mixed jet radius and half-jet opening angle. This information is very practical when introducing a second body to the problem. Even though the flow might change a lot, the theoretically necessary space for isolated jet flow can be determined. This superposition allows to make a qualitative guess on possible interaction scenarios, and theoretical jet impingement areas. It is also easier to track deviations from the superposition. The experimental measurement with a spanwise oriented rake in the streamwise plane is cost-effect for symmetric problems: A small streamwise resolution allows for fast measurement times while significant data properties are gathered.

Item URL in elib:https://elib.dlr.de/146815/
Document Type:Conference or Workshop Item (Speech)
Title:Steady aerodynamics flow analysis for determining the necessary build space of an isolated jet shear layer
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jente, ChristianChristian.Jente (at) dlr.dehttps://orcid.org/0000-0001-6115-3084
Date:2 December 2021
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Ähnlichkeitsparameter Strahlklappeninteraktion Jet flap interaction similarity parameters JFI aerodynamics
Event Title:EU H2020 1st DJINN Conference: Industrially oriented jet noise reduction technologies
Event Location:Brüssel, Belgien
Event Type:international Conference
Event Dates:01.-03. Dez. 2021
Organizer:CFD Berlin and the von Karman Institute for Fluid Dynamics (VKI)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Future Engines and Engine Integration
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Leitungsbereich AS BS
Institute for Aerodynamics and Flow Technology > Technical Acoustics
Institute of Propulsion Technology > Engine Acoustic
Deposited By: Jente, Christian
Deposited On:09 Dec 2021 08:15
Last Modified:09 Dec 2021 08:15

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