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Analysis and uncertainty quantification of a hybrid laminar flow control system

Barklage, A. and Römer, U. and Bertram, Anna and Bekemeyer, Philipp and Himisch, Jan and Radespiel, R. and Badrya, Camli (2022) Analysis and uncertainty quantification of a hybrid laminar flow control system. In: AIAA SciTech 2022 Forum. AIAA SciTech 2022, 2022-01-03 - 2022-01-07, San Diego, USA. doi: 10.2514/6.2022-2452. ISBN 978-162410631-6.

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Abstract

This study aims at quantification of suction velocities for a hybrid laminar flow control (HLFC) application by taking data and model uncertainties into account. Since suction velocities cannot be measured directly, they are calculated using the Darcy-Forchheimer model. The model uses the pressure distribution and the porosity characteristics of the suction skin as boundary conditions that incorporate various sources of uncertainties. This paper attempts to quantify these uncertainties and to propagate them through the Darcy-Forchheimer model. The approach uses a sampling method to provide uncertainties associated with the suction velocities. In addition, the modelling error of the Darcy-Forchheimer model is estimated and also taken into account. It turns out that information on the local porosity characteristics of the suction skin is essential to reduce uncertainty of the estimated suction velocities for the application studied. In order to identify the most influential contributions to uncertainties of the suction velocities, a sensitivity study is carried out. The most influential contribution shows to be the uncertainty in the porosity characteristics, followed by uncertainties in the pressure distribution. Contributions with negligible influence are the model error and the uncertainty in reference pressure

Item URL in elib:https://elib.dlr.de/148334/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis and uncertainty quantification of a hybrid laminar flow control system
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Barklage, A.Technische Universität BraunschweigUNSPECIFIEDUNSPECIFIED
Römer, U.Technische Universität BraunschweigUNSPECIFIEDUNSPECIFIED
Bertram, AnnaUNSPECIFIEDhttps://orcid.org/0000-0002-2757-670XUNSPECIFIED
Bekemeyer, PhilippUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Himisch, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Radespiel, R.Technische Universität BraunschweigUNSPECIFIEDUNSPECIFIED
Badrya, CamliTechnische Universität BraunschweigUNSPECIFIEDUNSPECIFIED
Date:January 2022
Journal or Publication Title:AIAA SciTech 2022 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.2514/6.2022-2452
ISBN:978-162410631-6
Status:Published
Keywords:Hybrid Laminar Flow, Uncertainty Quantification, Flow Control, Data Fusion
Event Title:AIAA SciTech 2022
Event Location:San Diego, USA
Event Type:international Conference
Event Start Date:3 January 2022
Event End Date:7 January 2022
Organizer:American Institute of Aeronautics and Astronautics
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 - Digital Technologies
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, BS
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Bekemeyer, Philipp
Deposited On:17 Jan 2022 07:52
Last Modified:24 Apr 2024 20:46

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