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Towards Virtual Flight in Realistic Environments: A Hybrid Coupled Simulation Method

Zholtovski, Stefan and Stephan, Anton and Holzäpfel, Frank (2020) Towards Virtual Flight in Realistic Environments: A Hybrid Coupled Simulation Method. AIAA Journal, 58 (3), pp. 1266-1277. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.J058390. ISSN 0001-1452.

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Official URL: http://dx.doi.org/10.2514/1.J058390


The vision of establishing a simulation system for virtual flight in a realistic environment is addressed by the coupling of two separate flow solvers in a bidirectional manner. In the long run, this shall enable (for example) the simulation of a flight through realistic atmospheric turbulence, including the effects on the aircraft and the rollup of trailing vortices and their further development until final decay. A compressible Reynolds-averaged Navier–Stokes (RANS) solver resolves the near field around a vortex generator (a rectangular NACA0012 wing geometry), including its boundary layer. An incompressible large-eddy simulation (LES) solver is used to model the atmosphere around the vortex generator, with its wake footprint in the LES domain being of primary interest. Two validation cases are presented. First, the method is partially validated with data from a wind-tunnel experiment. The second case is a vertical gust-wind simulation, which is compared to an already validated pure RANS approach for calculating the global aerodynamic coefficients given analytically defined atmospheric disturbances. The hybrid method proves to be powerful in cases where large-scale transient atmospheric effects and their interaction with flying aircraft are to be studied.

Item URL in elib:https://elib.dlr.de/134921/
Document Type:Article
Title:Towards Virtual Flight in Realistic Environments: A Hybrid Coupled Simulation Method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Holzäpfel, FrankDLR, IPAhttps://orcid.org/0000-0003-3182-1832UNSPECIFIED
Date:March 2020
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1266-1277
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:wake vortex, hybrid simulation, code coupling, large eddy simulation, Reynolds averaged Navier-Stokes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Holzäpfel, Dr. habil. Frank
Deposited On:15 May 2020 15:38
Last Modified:24 Oct 2023 14:43

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