elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Numerical and Experimental Design of a radial displaceable Inlet Distortion Device

Kajasa, Bojan und Lengyel, Timea und Meyer, Robert (2022) Numerical and Experimental Design of a radial displaceable Inlet Distortion Device. In: 25th ISABE. International Society of Air Breathing Engines, 25th Conference, 2022-09-25 - 2022-09-30, Ottawa, Kanada.

[img] PDF - Nur DLR-intern zugänglich
2MB

Kurzfassung

The engine embedded in the aircraft fuselage is a promising future engine concept to achieve the aimed reduction of the flight mission fuel consumption. Due to high degree of integration, a part of the fuselage boundary layer enters the engines, which reaccelerate the fluid. The benefit is due to a reduced engine inlet momentum whereby less necessary power input for thrust production is necessary to produce the same amount of thrust, compared to non-distorted and is the main idea of the Boundary Layer Ingestion concept (BLI). This concept requires a well-adapted Fan - resistance against the inhomogeneous inflow condition over the whole flight mission. Design of this kind of Fan or more over an efficient and reliable thrust generator system requires a deep knowledge of the flow phenomena governing this area. This paper presentsthe development of an Inlet distortion device (IDD) dedicated for a test setup with a newly designed counter rotating fan. The basis is the design of a device, which is able to generate the BLI-distortion in the test rig and the target is to achieve a calculated BLI pressure distribution, which comes from a CFD simulation of an aircraft with embedded engines. Since the counter-rotating rotor blades are made of carbon-fiber reinforced plastic material and were designed without inlet distortion, the mechanical behaviour of the blades is assumed to be critical at distorted inflow conditions. The inlet distortion device (IDD) should be able to be removed completely from the flow channel, so undistorted flow will be achieved quickly in the case of critical vibrations or amplitudes. One important parameter of the perforation is the opening ratio. This parameter will be applied as a design parameter to achieve the desired total pressure distribution. The validation of the numerical CFD simulations is done by experimental measurement data at a pre-examination test bench. The perforation pattern is optimized at a Mach number condition of test rig applying the validated numerical setup. Through the optimization of the opening ratio the choking of the IDD could be prevented. The influence of the immersion depth of the IDD is investigated by 3D-RANS CFD calculations to achieve different BLI distributions.

elib-URL des Eintrags:https://elib.dlr.de/191751/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Numerical and Experimental Design of a radial displaceable Inlet Distortion Device
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Kajasa, BojanBojan.Kajasa (at) dlr.dehttps://orcid.org/0009-0007-3997-3458NICHT SPEZIFIZIERT
Lengyel, TimeaTimea.Lengyel (at) dlr.dehttps://orcid.org/0009-0002-3320-7019NICHT SPEZIFIZIERT
Meyer, RobertRobert.Meyer (at) dlr.dehttps://orcid.org/0009-0005-5241-1818NICHT SPEZIFIZIERT
Datum:September 2022
Erschienen in:25th ISABE
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Boundary Layer Ingestion, Counter-Rotating Fan, Inlet Distortion Device, perturbation pattern, immersion depth, CFD
Veranstaltungstitel:International Society of Air Breathing Engines, 25th Conference
Veranstaltungsort:Ottawa, Kanada
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:25 September 2022
Veranstaltungsende:30 September 2022
Veranstalter :International Society of Air Breathing Engines
HGF - Forschungsbereich:Energie
HGF - Programm:Materialien und Technologien für die Energiewende
HGF - Programmthema:Thermische Hochtemperaturtechnologien
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SP - Energiespeicher
DLR - Teilgebiet (Projekt, Vorhaben):E - Dekarbonisierte Industrieprozesse, L - Triebwerkskonzepte und -integration
Standort: Cottbus
Institute & Einrichtungen:Institut für CO2-arme Industrieprozesse
Institut für Antriebstechnik
Hinterlegt von: Kajasa, Bojan
Hinterlegt am:07 Dez 2022 10:02
Letzte Änderung:24 Apr 2024 20:52

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.