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An Implementation of the Vortex Lattice and the Doublet Lattice Method

Voß, Arne (2020) An Implementation of the Vortex Lattice and the Doublet Lattice Method. DLR-Interner Bericht. DLR-IB-AE-GO-2020-137, 52 S.

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Abstract

This report documents the implementation of a Vortex Lattice Method (VLM) and a Doublet Lattice Method (DLM) in Python. The aerodynamic influence matrices (AICs) obtained from this implementation are validated with respect to MSC.Nastran for both the parabolic and the quartic integration schemes of the DLM. The test cases include dihedral and sweep of the main wing, wing-empennage configurations with the horizontal tail planar to the main wing, near-planar and further away (e.g. T-tail) and with/without a vertical tail. The test cases have been inspected at different mach numbers and reduced frequencies. For all tested aircraft configurations the results were found to be equivalent to MSC.Nastran in a numerical sense. Using panels which are misaligned in y-direction provokes differences and errors.

Item URL in elib:https://elib.dlr.de/136536/
Document Type:Monograph (DLR-Interner Bericht)
Title:An Implementation of the Vortex Lattice and the Doublet Lattice Method
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Date:7 October 2020
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:52
Status:Published
Keywords:aerodynamic panel method, vortex lattice, doublet lattice, VLM, DLM
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Deposited By: Voß, Arne
Deposited On:19 Oct 2020 11:32
Last Modified:19 Oct 2020 11:32

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