Effect of flexibility on unsteady aerodynamics forces of a purely plunging airfoil
نویسندگان
چکیده
منابع مشابه
Unsteady flow past a plunging airfoil
This paper presents simulations of unsteady flow past a plunging airfoil using the highorder spectral difference (SD) method. Both third-order and fourth-order SD methods are used on unstructured quadrilateral grids. The vortex shedding pattern of an airfoil in an oscillating plunge motion becomes asymmetric at a sufficiently high frequency. The SD method is able to capture this effect and reve...
متن کاملAerodynamics of Low Reynolds Number Plunging Airfoil under Gusty Environment
Abstract It is known that plunging airfoil can produce both lift and thrust with certain combination of plunging amplitude and frequency. Motivated by our interest in micro air vehicles (MAVs), we utilize a NavierStokes equation solver to investigate the aerodynamics of a flapping airfoil. The roles of the plunging and pitching amplitude and frequency, and Strouhal number are studied. For a sym...
متن کاملUnsteady Aerodynamics and Trailing-edge Vortex Sheet of An Airfoil
Unsteady flow models of wings and airfoils have been studied to understand the aerodynamic performance of natural flyers and provide improved maneuverability for micro aerial vehicles (MAVs). Vortex methods have been extensively applied to reduce the dimensionality of these aerodynamic models, based on the proper estimation of the distribution and evolution of the vortices in the wake. In such ...
متن کاملeffect of oral presentation on development of l2 learners grammar
this experimental study has been conducted to test the effect of oral presentation on the development of l2 learners grammar. but this oral presentation is not merely a deductive instruction of grammatical points, in this presentation two hypotheses of krashen (input and low filter hypotheses), stevicks viewpoints on grammar explanation and correction and widdowsons opinion on limited use of l1...
15 صفحه اولthe effect of a selfregulatory approach on the improvement of efl learners listening comprehension
تاثیر آموزش مهارت خود محوری بر روی ارتقاء مهارت شنیداری زبان آموزان هدف این پژوهش بررسی عوامل موثر در ارتقا مهارت شنیداری زبان آموزان ایرانی بود. در مرحله اول این تحقیق پژوهشگر پس از انجام مصاحبه نود زبان آموز را با استفاده از تست ایلتس انتخاب شدند. برای بررسی عوامل عوامل موثر در ارتقا مهارت شنیداری زبان آموزان ایرانی از دو نوع فیلم ویرایش شده و ویرایش نشده استفاده گردید.برای انجام تح...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chinese Journal of Aeronautics
سال: 2020
ISSN: 1000-9361
DOI: 10.1016/j.cja.2019.08.002