Zobrazeno 1 - 10
of 88
pro vyhledávání: '"W. Würz"'
Publikováno v:
IUTAM Laminar-Turbulent Transition ISBN: 9783030679019
The effect of inflow turbulence level on the boundary layer transition on a Natural Laminar Flow (NLF) airfoil is investigated through detailed wind tunnel measurements. The free-stream turbulence level (\( Tu \)) is varied in the range \(0.01\%\le T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8bf54a7ae347aef4dcaeda57e95e859
https://doi.org/10.1007/978-3-030-67902-6_21
https://doi.org/10.1007/978-3-030-67902-6_21
Publikováno v:
European Journal of Mechanics - B/Fluids. 77:48-70
The present investigation is devoted to initial nonlinear stages of laminar–turbulent transition initiated by broadband disturbances in an essentially non-self-similar boundary layer, developing on a two-dimensional airfoil. The measurements are pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dcfc745db463e82ab85b4d379cc6d87
https://doi.org/10.1016/j.euromechflu.2019.03.002
https://doi.org/10.1016/j.euromechflu.2019.03.002
Publikováno v:
AIAA Journal. 55:1673-1680
The tonal self-noise emission of a vehicle side mirror and the associated flowfield are investigated experimentally. The relevant surface on the model includes a region of geometry-induced laminar ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e48b968d9fac98e1ce3f5b854205a6da
https://doi.org/10.2514/1.j055513
https://doi.org/10.2514/1.j055513
Publikováno v:
Journal of Sound and Vibration. 387:79-95
The tonal self-noise emission of a two-dimensional blunt-body side mirror model is investigated experimentally in order to characterize the underlying source mechanism. The two-dimensional side mirror design is closely related to an automotive side m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97e7b50b8e99eb9cf88f04225b65d468
https://doi.org/10.1016/j.jsv.2016.10.012
https://doi.org/10.1016/j.jsv.2016.10.012
Autor:
Christian Klein, Markus J. Kloker, Marco Costantini, Jonathan Lemarechal, W. Würz, Holger B. E. Kurz, Sven Schaber, Thomas Streit
The Temperature-Sensitive Paint (TSP) method is used for surface-based flow visualizations on a swept-wing wind-tunnel model with a generic natural laminar-flow airfoil. Within the investigated parameter range the stationary crossflow instability is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b254e63f1daa70083f1625680864a98a
https://elib.dlr.de/128035/
https://elib.dlr.de/128035/
Publikováno v:
Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783030252526
Wind tunnel measurements have been performed to investigate the effect of large scale turbulence on the laminar to turbulent transition on a natural laminar flow airfoil through cyclic 2D variations of the inflow angle. The investigated range of redu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b14fa48b9c7284011e08fadb559e572a
https://doi.org/10.1007/978-3-030-25253-3_25
https://doi.org/10.1007/978-3-030-25253-3_25
Within the Luftfahrtforschungsprogramm (LuFo), measurements on a laminar flow airfoil in flight as well as in a wind tunnel are combined with direct numerical simulations (DNS) to provide the base for future improvements of transition prediction unde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a7664aa23364a61c081f54e7e8fa864
Publikováno v:
International Journal of Aeroacoustics. 14:833-882
A semi-empirical model to determine the wall pressure frequency spectrum beneath a two-dimensional, pressure gradient turbulent boundary-layer is presented. The model is derived based on the experimental wall pressure data of various research groups.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8095d12a132009bd7711d035af44823a
https://doi.org/10.1260/1475-472x.14.5-6.833
https://doi.org/10.1260/1475-472x.14.5-6.833
Publikováno v:
Procedia IUTAM. 14:423-432
The present study is devoted to nonlinear (resonant) mode interactions in the wake of a medium height, cylindrical roughness element, which is placed in a laminar, airfoil boundary layer. The roughness element causes a considerable mean flow distorti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1daf3a5d12233bab660a252f2f409e9e
Publikováno v:
Journal of Fluid Mechanics. 758:238-286
Roughness-induced transition is one of the main parameters contributing to performance loss of airfoils. Within this paper, the disturbance evolution downstream of a single, cylindrical roughness element, which is placed in a laminar boundary layer i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbf8510136b00ca38c55dc50d4e859d6
https://doi.org/10.1017/jfm.2014.499
https://doi.org/10.1017/jfm.2014.499