elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Simulation of Suction Chambers with Variable Pressure Distribution for HLFC Applications

Lüdeke, Heinrich (2022) Simulation of Suction Chambers with Variable Pressure Distribution for HLFC Applications. In: 23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics. 23. STAB-DGLR-Symposium 2022, 9.-10. Nov. 2022, Berlin, Germany.

Full text not available from this repository.

Official URL: https://www.tu.berlin/index.php?id=27890

Abstract

For a simplified but effective chamber concept of boundary-layer suction for hybrid laminar flow control, different velocity distributions inside suction chambers under consideration of pressure gradients are simulated. The flow inside these chambers is calculated by 2D and 3D grids to predict suction velocity as well as the wall pressure distribution at different suction pressures. The classical ALTTA concept of a microporous metal with a substructure of stringers and single chambers for adapted inner pressure will be investigated, as well as modern chamberless applications with TSSD surfaces and micro etched metal foils at varying porosity for each surface part. By the latter approach, extensively long suction regions result in non negligible pressure gradients inside the porous sheet and the pressure distribution on the outside wall, which is also taken into account. These effects require an additional pressure gradient boundary condition, which was added and successfully evaluated by comparison with experimental data, allowing the future prediction of suction distribution for an optimal transition suppression.

Item URL in elib:https://elib.dlr.de/192262/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation of Suction Chambers with Variable Pressure Distribution for HLFC Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lüdeke, HeinrichUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:2022
Journal or Publication Title:23rd STAB/DGLR Symposium on New Results in Numerical and Experimental Fluid Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:HLFC, Laminar Flow, Suction, Chamber flow
Event Title:23. STAB-DGLR-Symposium 2022
Event Location:Berlin, Germany
Event Type:national Conference
Event Dates:9.-10. Nov. 2022
Organizer:STAB/DGLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Aircraft and  Validation
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Lüdeke, Dr.-Ing. Heinrich
Deposited On:16 Dec 2022 09:54
Last Modified:16 Dec 2022 09:54

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.