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Chaotic Dynamics of an Airfoil with Higher-Order Plunge and Pitch Stiffnesses in Incompressible Flow
المؤلفون المشاركون
Rajagopal, Karthikeyan
Admassu, Yesgat
Weldegiorgis, Riessom
Duraisamy, Prakash
Karthikeyan, Anitha
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-10-30
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Dynamical properties of a two-dimensional airfoil model with higher-order strong nonlinearities are investigated.
Firstly, a state-space model is derived considering the plunge and pitch stiffnesses as generalized functions.
Then, a stiffness function having square, cubic, and fifth-power nonlinearities is considered for both plunging and pitching stiffnesses, and the dimensionless state equations are derived.
Various dynamical properties of the proposed model are investigated using equilibrium points, eigenvalues, and Lyapunov exponents.
To further analyze the dynamical behavior of the system, bifurcation plots are derived.
It is interesting to note that the new airfoil model with higher-order nonlinearities shows multistability with changing airspeed, and there are infinitely countable number of coexisting attractors generally called as megastability.
Both multistability and megastability features of the airfoil model were not captured earlier in the literatures.
To be clear, it is the first time a megastable feature is exposed in a physical system.
Finally, to analyze the multifrequency effects of the airfoil model, we have presented the bicoherence plots.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Rajagopal, Karthikeyan& Admassu, Yesgat& Weldegiorgis, Riessom& Duraisamy, Prakash& Karthikeyan, Anitha. 2019. Chaotic Dynamics of an Airfoil with Higher-Order Plunge and Pitch Stiffnesses in Incompressible Flow. Complexity،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1132051
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Rajagopal, Karthikeyan…[et al.]. Chaotic Dynamics of an Airfoil with Higher-Order Plunge and Pitch Stiffnesses in Incompressible Flow. Complexity No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1132051
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Rajagopal, Karthikeyan& Admassu, Yesgat& Weldegiorgis, Riessom& Duraisamy, Prakash& Karthikeyan, Anitha. Chaotic Dynamics of an Airfoil with Higher-Order Plunge and Pitch Stiffnesses in Incompressible Flow. Complexity. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1132051
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1132051
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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