Bifurcation Analysis with Aerodynamic-Structure Uncertainties by the Nonintrusive PCE Method
المؤلفون المشاركون
Yang, Chao
Wang, Linpeng
Dai, Yuting
المصدر
International Journal of Aerospace Engineering
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-17، 17ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-02-16
دولة النشر
مصر
عدد الصفحات
17
الملخص EN
An aeroelastic model for airfoil with a third-order stiffness in both pitch and plunge degree of freedom (DOF) and the modified Leishman–Beddoes (LB) model were built and validated.
The nonintrusive polynomial chaos expansion (PCE) based on tensor product is applied to quantify the uncertainty of aerodynamic and structure parameters on the aerodynamic force and aeroelastic behavior.
The uncertain limit cycle oscillation (LCO) and bifurcation are simulated in the time domain with the stochastic PCE method.
Bifurcation diagrams with uncertainties were quantified.
The Monte Carlo simulation (MCS) is also applied for comparison.
From the current work, it can be concluded that the nonintrusive polynomial chaos expansion can give an acceptable accuracy and have a much higher calculation efficiency than MCS.
For aerodynamic model, uncertainties of aerodynamic parameters affect the aerodynamic force significantly at the stage from separation to stall at upstroke and at the stage from stall to reattach at return.
For aeroelastic model, both uncertainties of aerodynamic parameters and structure parameters impact bifurcation position.
Structure uncertainty of parameters is more sensitive for bifurcation.
When the nonlinear stall flutter and bifurcation are concerned, more attention should be paid to the separation process of aerodynamics and parameters about pitch DOF in structure.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wang, Linpeng& Dai, Yuting& Yang, Chao. 2017. Bifurcation Analysis with Aerodynamic-Structure Uncertainties by the Nonintrusive PCE Method. International Journal of Aerospace Engineering،Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1157941
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wang, Linpeng…[et al.]. Bifurcation Analysis with Aerodynamic-Structure Uncertainties by the Nonintrusive PCE Method. International Journal of Aerospace Engineering No. 2017 (2017), pp.1-17.
https://search.emarefa.net/detail/BIM-1157941
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wang, Linpeng& Dai, Yuting& Yang, Chao. Bifurcation Analysis with Aerodynamic-Structure Uncertainties by the Nonintrusive PCE Method. International Journal of Aerospace Engineering. 2017. Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1157941
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1157941
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر