کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1725723 1520711 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Instability analysis of deepwater riser with fairings
ترجمه فارسی عنوان
تجزیه و تحلیل بیثباتی رودخانه عمیق آب با فریزر
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
چکیده انگلیسی


• The 2D problem of a fairing on a rigid riser is considered.
• An analytical model was developed to predict the instability onset conditions.
• A parametric study showed the significant role of the hydrodynamic coefficients.
• The effect of mass distribution on the stability of the system was identified.

The paper investigates the mechanism of instability of deepwater risers fitted with fairings and presents an analytical model to predict the instability onset conditions. The simplified case of a two-dimensional (2D) problem was considered. The governing equations were derived, and the hydrodynamic forces were calculated and the effect of motion in these forces was taken into consideration. The final equations were linearised and an eigenvalue analysis was employed to systematically examine the stability with the emphasis on identifying the critical current speed for a given system. This model was validated against the available test results and showed a good agreement. A parametric study was also carried out. It showed the significant role of the hydrodynamic coefficients as well as mass distribution in the stability of the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 79, 15 March 2014, Pages 26–34
نویسندگان
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