کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
268113 504424 2010 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the effect of internal flow on vibrating catenary risers in three dimensions
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
On the effect of internal flow on vibrating catenary risers in three dimensions
چکیده انگلیسی

The complete 3D nonlinear dynamic problem of extensible, catenary risers conveying fluid is considered. For describing the dynamics of the system, the Newtonian derivation procedure is followed. The velocity field inside the pipe is formulated using potential theory. The hydrodynamic effects are taken into consideration through the nonlinear drag forces and the added inertia due to the hydrodynamic mass. Following the Newtonian derivation, the dynamics of the pipe element and the fluid element are considered separately and the final governing set is derived by combining the equations of inertia equilibrium. The study focuses specifically on the effect of the inner flow to the global dynamics of the riser. This task is accomplished using both time and frequency domain solution techniques. The former apply to the complete nonlinear system and the latter to the reduced linearized set. The effect of the inner flow is assessed based on numerical predictions which were obtained after extensive numerical computations and eventually some very interesting conclusions are drawn.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 32, Issue 10, October 2010, Pages 3313–3329
نویسندگان
,