کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5129217 1489605 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling and Control of Flow Induced Vibration of Top-Tensioned Marine Risers Using Analytical Methods
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Modelling and Control of Flow Induced Vibration of Top-Tensioned Marine Risers Using Analytical Methods
چکیده انگلیسی

For a riser array in deep waters, interference between individual risers in strong ocean current is of operational concern and thereby a key design issue. The lateral deflection is likely to be large, and the risers may experience collision with fatigue or coating damage as a consequence. In this paper, active control of flexible marine riser angle and the reduction of flow induced (forced) vibration under a time varying distributed load were considered using boundary control approach. A torque actuator was introduced in the upper riser package and a boundary control was designed to generate the required signal for riser angle control and vibration reduction with guaranteed closed-loop stability. The design is based on the partial differential equations of the system, which are developed using energy principle. Analytical method of solution was deployed with the aid of a program, developed within the framework of MATLAB, to predict the riser's behaviour by top tensioning. A sensitivity analysis for different values of the control variables was carried out. The results of this work showed that active control of flexible marine riser by top-tensioning reduced flow induced vibration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Manufacturing - Volume 7, 2017, Pages 609-615
نویسندگان
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