کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
293349 | 511129 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vortical structures around a surface-mounted pyramid in a thin boundary layer
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Vortical structures around a surface-mounted pyramid in a thin boundary layer Vortical structures around a surface-mounted pyramid in a thin boundary layer](/preview/png/293349.png)
چکیده انگلیسی
The results of an experimental investigation of the flow around surface-mounted, sharp-edged pyramids in thin boundary layer flows are presented. Oil-film flow visualizations, PIV and LDV are used to document the flow field. For slender pyramids (ζ<75°), periodic flow in the wake of the slender pyramid is a result of regular vortex shedding. Two pairs of counter-rotating vortices exist on the side faces. One of these extends to the wake and sheds alternately from opposite sides. The other pair forms the rotor vortex downstream of the pyramid apex. A pair of counter-rotating vortices in the near wake are vertically extended and tilted downstream. The flow pattern is similar to an owl-face of the second kind.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 96, Issues 6–7, June–July 2008, Pages 769–778
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 96, Issues 6–7, June–July 2008, Pages 769–778
نویسندگان
Mazen M. AbuOmar, Robert J. Martinuzzi,