An experimental investigation of laminar separation bubble formation on flexible membrane wing
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Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
In this study, fluid-structure interaction over a flexible membrane wing with aspect ratio (AR) of 3 at low Reynolds numbers was investigated experimentally. Smoke wire flow visualization technique was performed for analyzing time-dependent behavior of flow over this flexible membrane wing. Furthermore, time dependent deformation of flexible membrane wing was measured. It was clearly seen that the value of membrane deformation increased with increasing angle of attack. Moreover, it was stated that the size of laminar separation bubble (LSB) changed with time due to the unsteady flow characteristics of membrane wing. The unsteady behavior over the flexible membrane wing caused different deformation modes to form at different angles of attack. For the flexible wings with higher aspect ratios, the LSB was more dominant in the membrane wings at low Re numbers, and caused the membrane vibration to increase based on the angle of attack which the LSB started to be overpowering. (C) 2017 Elsevier Masson SAS. All rights reserved.
Açıklama
Anahtar Kelimeler
Flexible Membrane Wing, Fluid-Structure Interaction, Laminar Separation Bubble, Unsteady Aerodynamics
Kaynak
European Journal of Mechanics B-Fluids
WoS Q Değeri
N/A
Scopus Q Değeri
Q1
Cilt
65
