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Uncertainty Quantification and Sensitivity Analysis of Transonic Aerodynamics with Geometric Uncertainty
المؤلفون المشاركون
Wu, Xiaojing
Zhang, Weiwei
Song, Shufang
المصدر
International Journal of Aerospace Engineering
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-16، 16ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-02-26
دولة النشر
مصر
عدد الصفحات
16
الملخص EN
Airfoil geometric uncertainty can generate aerodynamic characteristics fluctuations.
Uncertainty quantification is applied to compute its impact on the aerodynamic characteristics.
In addition, the contribution of each uncertainty variable to aerodynamic characteristics should be computed by the uncertainty sensitivity analysis.
In the paper, Sobol’s analysis is used for uncertainty sensitivity analysis and a nonintrusive polynomial chaos method is used for uncertainty quantification and Sobol’s analysis.
It is difficult to describe geometric uncertainty because it needs a lot of input parameters.
In order to alleviate the contradiction between the variable dimension and computational cost, a principal component analysis is introduced to describe geometric uncertainty of airfoil.
Through this technique, the number of input uncertainty variables can be reduced and typical global deformation modes can be obtained.
By uncertainty quantification, we can learn that the flow characteristics of shock wave and boundary layer separation are sensitive to the geometric uncertainty in transonic region, which is the main reason that transonic drag is sensitive to the geometric uncertainty.
The sensitivity analysis shows that the model can be simplified by eliminating unimportant geometric modes.
Moreover, which are the most important geometric modes to transonic aerodynamics can be learnt.
This is very helpful for airfoil design.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wu, Xiaojing& Zhang, Weiwei& Song, Shufang. 2017. Uncertainty Quantification and Sensitivity Analysis of Transonic Aerodynamics with Geometric Uncertainty. International Journal of Aerospace Engineering،Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1158176
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wu, Xiaojing…[et al.]. Uncertainty Quantification and Sensitivity Analysis of Transonic Aerodynamics with Geometric Uncertainty. International Journal of Aerospace Engineering No. 2017 (2017), pp.1-16.
https://search.emarefa.net/detail/BIM-1158176
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wu, Xiaojing& Zhang, Weiwei& Song, Shufang. Uncertainty Quantification and Sensitivity Analysis of Transonic Aerodynamics with Geometric Uncertainty. International Journal of Aerospace Engineering. 2017. Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1158176
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1158176
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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