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Towards Wall-Modeled LES with Lattice Boltzmann Method for Aeroacoustics: Application and Understanding

Soni, Malav Mukesh and Ewert, Roland and Delfs, Jan Werner and Masilamani, Kannan (2022) Towards Wall-Modeled LES with Lattice Boltzmann Method for Aeroacoustics: Application and Understanding. In: 28th AIAA/CEAS Aeroacoustics Conference, 2022, pp. 1-22. American Institute of Aeronautis and Astronautics, Inc.. 28th AIAA/CEAS Aeroacoustics Conference, 14-17 June 2022, Southampton, England. doi: 10.2514/6.2022-2918.

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Official URL: https://arc.aiaa.org/doi/10.2514/6.2022-2918


The aim of this work is direct noise computation (DNC) of high-lift wing using Wall-modeled LES (WMLES) with Lattice Boltzmann Method (LBM). There are two aspects of this work: application, where the commercial LB solver ProLB is used as a DNC tool to compute highlift noise, and understanding, where an effort is made to gather know-how about the intricate details/nuances involved with wall-modeling in LBM by implementing it. For the present study, the Category 6 LEISA2 F16 high-lift configuration from the Benchmark for Airframe Noise Computations (BANC) workshop has been selected as the high-lift airfoil. The three-element unswept high-lift wing with deployed slat and flap is resolved on a mesh with different spanwise resolutions ranging from 5% to 20% clean chord length. Periodic boundary condition is used along the spanwise direction. The results of WMLES-LBM simulations were validated for relative accuracy against the extensive experimental BANC database. Results of both aerodynamic and aeroacoustic comparison with the experiments is discussed in detail. For the aspect of understanding, a quasi-analytical wall function for flat walls has been introduced into the academic LB research code Musubi. Results of the simulation were compared with the published DNS results.

Item URL in elib:https://elib.dlr.de/189198/
Document Type:Conference or Workshop Item (Speech)
Title:Towards Wall-Modeled LES with Lattice Boltzmann Method for Aeroacoustics: Application and Understanding
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Delfs, Jan WernerUNSPECIFIEDhttps://orcid.org/0000-0001-8893-1747UNSPECIFIED
Date:June 2022
Journal or Publication Title:28th AIAA/CEAS Aeroacoustics Conference, 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-22
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:American Institute of Aeronautis and Astronautics, Inc.
Keywords:noise computation, Lattice Boltzmann Method, LBM simulation
Event Title:28th AIAA/CEAS Aeroacoustics Conference
Event Location:Southampton, England
Event Type:international Conference
Event Dates:14-17 June 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Stebner, Margrit Elisabeth
Deposited On:04 Nov 2022 09:54
Last Modified:04 Nov 2022 09:54

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