کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
292491 510898 2013 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wind-induced effects on bluff bodies in turbulent flows: Nonstationary, non-Gaussian and nonlinear features
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Wind-induced effects on bluff bodies in turbulent flows: Nonstationary, non-Gaussian and nonlinear features
چکیده انگلیسی


• Nonstationary, non-Gaussian and nonlinear features in aerodynamics are investigated.
• Recent developments in the analysis, modeling and identification tools are discussed.
• Improved understanding of turbulence effects on bluff body aerodynamics is stressed.

Developments made over the past several decades in bluff body aerodynamics and aeroelasticity have enhanced our abilities to better understand and capture the effects of turbulent wind on structures. These developments had implicit assumptions of stationarity, Gaussianity and linear features while observations in storms and the attendant aerodynamic effects clearly show a departure from these tacit assumptions. In view of this, there is a need to revisit the current paradigms and to look for improved understanding concerning the nature of wind fields, the associated aerodynamics and the resulting load effects in recognition of the following emerging realities: nonstationarity/transient wind events; non-Gaussianity; nonlinearity of structural and aerodynamic origins and unsteady/transient aerodynamics. Besides, the role of turbulence in bluff body aerodynamics and aeroelasticity is emphasized and its implications are delineated. Also, one needs to take note of recent advances in analysis and identification tools, and modeling frameworks, which promise to offer better understanding of the underlying complexities associated with the aforementioned themes. This paper discusses these issues and illustrates their significance in bluff body aerodynamics and aeroelasticity from the perspective of wind effects on built infrastructure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 122, November 2013, Pages 21–37
نویسندگان
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