Details
| Original language | English |
|---|---|
| Title of host publication | Advances in Simulation of Wing and Nacelle Stall |
| Pages | 189-202 |
| Number of pages | 14 |
| Volume | 131 |
| ISBN (electronic) | 978-3-319-21127-5 |
| Publication status | Published - 14 Jul 2016 |
Publication series
| Name | Notes on Numerical Fluid Mechanics and Multidisciplinary Design |
|---|---|
| Publisher | Springer International Publishing Switzerland 2016 |
| ISSN (Print) | 1612-2909 |
| ISSN (electronic) | 1860-0824 |
Abstract
In this paper we present two different methods to provide turbulence data for aircraft design studies. The first method is based on the discrete gust approach which describes one single gust event as analytical approximation. Based on mean gust shape calculations in turbulent wind fields obtained from high-resolution largeeddy simulations (LES), we suggest both a new one- and two-dimensional gust shape model. The one-dimensional gust shapes differ significantly from the classical one-minus-cosine gust. Two-dimensional mean gust shapes show elliptically shaped contours with varying aspect ratios for different gust diameters. The second and more complex method provides three-dimensional turbulent wind speed data from LES. This approach allows to consider explicitly the influence of buildings on aircraft during take off or landing. In order to quantify the influence of an idealized airport building on aircraft, a virtual crosswind landing trough the wake of a building was simulated within the LES data. Following the 7-knots-criterion, the building induced flow disturbances may have a significant influence on landing aircraft. Both methods will be used in future to initialize a computational fluid dynamics (CFD) model to simulate the flow around an aircraft.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Fluid Flow and Transfer Processes
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Advances in Simulation of Wing and Nacelle Stall. Vol. 131 2016. p. 189-202 (Notes on Numerical Fluid Mechanics and Multidisciplinary Design).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Development and improvement of two methods of different complexity to simulate atmospheric boundary layer turbulence for aircraft design studies
AU - Knigge, Christoph
AU - Raasch, Siegfried
PY - 2016/7/14
Y1 - 2016/7/14
N2 - In this paper we present two different methods to provide turbulence data for aircraft design studies. The first method is based on the discrete gust approach which describes one single gust event as analytical approximation. Based on mean gust shape calculations in turbulent wind fields obtained from high-resolution largeeddy simulations (LES), we suggest both a new one- and two-dimensional gust shape model. The one-dimensional gust shapes differ significantly from the classical one-minus-cosine gust. Two-dimensional mean gust shapes show elliptically shaped contours with varying aspect ratios for different gust diameters. The second and more complex method provides three-dimensional turbulent wind speed data from LES. This approach allows to consider explicitly the influence of buildings on aircraft during take off or landing. In order to quantify the influence of an idealized airport building on aircraft, a virtual crosswind landing trough the wake of a building was simulated within the LES data. Following the 7-knots-criterion, the building induced flow disturbances may have a significant influence on landing aircraft. Both methods will be used in future to initialize a computational fluid dynamics (CFD) model to simulate the flow around an aircraft.
AB - In this paper we present two different methods to provide turbulence data for aircraft design studies. The first method is based on the discrete gust approach which describes one single gust event as analytical approximation. Based on mean gust shape calculations in turbulent wind fields obtained from high-resolution largeeddy simulations (LES), we suggest both a new one- and two-dimensional gust shape model. The one-dimensional gust shapes differ significantly from the classical one-minus-cosine gust. Two-dimensional mean gust shapes show elliptically shaped contours with varying aspect ratios for different gust diameters. The second and more complex method provides three-dimensional turbulent wind speed data from LES. This approach allows to consider explicitly the influence of buildings on aircraft during take off or landing. In order to quantify the influence of an idealized airport building on aircraft, a virtual crosswind landing trough the wake of a building was simulated within the LES data. Following the 7-knots-criterion, the building induced flow disturbances may have a significant influence on landing aircraft. Both methods will be used in future to initialize a computational fluid dynamics (CFD) model to simulate the flow around an aircraft.
UR - http://www.scopus.com/inward/record.url?scp=84937013066&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-21127-5_11
DO - 10.1007/978-3-319-21127-5_11
M3 - Conference contribution
AN - SCOPUS:84937013066
SN - 978-3-319-37067-5
SN - 978-3-319-21126-8
VL - 131
T3 - Notes on Numerical Fluid Mechanics and Multidisciplinary Design
SP - 189
EP - 202
BT - Advances in Simulation of Wing and Nacelle Stall
ER -