کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5017538 | 1466579 | 2017 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Forced motion experiments using cylinders with helical strakes
ترجمه فارسی عنوان
آزمایشات حرکت اجباری با استفاده از سیلندرها با ترمزهای مارپیچ
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کلمات کلیدی
ارتعاش ناشی از باد ضرایب هیدرودینامیکی، ستون هلالی، آزمایش حرکت اجباری،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
The hydrodynamic coefficients for straked cylinders were obtained from a set of forced motion experiments with a constant towing speed. Based on results from previous studies, two helical strake configurations were tested. The amplitude and frequency ratios of the in-line (IL) and cross-flow (CF) oscillations were fixed. This gave three free parameters of forced motion: CF oscillation amplitude, CF oscillation frequency, and phase angle between IL and CF oscillations. The hydrodynamic coefficients obtained for the straked cylinders were compared with results from forced oscillation tests using a bare cylinder. Clear differences between the designs were demonstrated. The hydrodynamic coefficients obtained from this study can be used in empirical models to predict vortex-induced vibration for structures with strakes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluids and Structures - Volume 68, January 2017, Pages 279-294
Journal: Journal of Fluids and Structures - Volume 68, January 2017, Pages 279-294
نویسندگان
Hidetaka Senga, Carl Martin Larsen,