کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8063560 | 1520642 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ship squat prediction using a potential flow Rankine source method
ترجمه فارسی عنوان
پیش بینی نیروی دریایی با استفاده از یک روش منبع رونقین جریان بالقوه
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کلمات کلیدی
ببخشید گام صدا، روش رابینین، سینکینگ، اسکات، اصلاح کردن
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی دریا (اقیانوس)
چکیده انگلیسی
A numerical method has been developed for predicting ship squat, with the goal of providing guidance to ship operators for avoidance of grounding in shallow water. The method assumes potential flow, and computations are sufficiently fast to allow evaluation for large numbers of conditions within practical time scales. Boundary conditions on the hull, free surface, and canal walls are satisfied using planar Rankine sources on solid boundaries and point Rankine sources placed a nominal distance above the calm waterline or free surface. Four different models of the free surface boundary condition have been implemented, ranging from a nominally flat free surface to fully nonlinear. For ships with a transom stern, the influence of flow separation is modelled using a virtual stern, which extends afterward from the transom to a location with zero width. The numerical method is generally robust, except for in the vicinity of critical flow conditions. Validation with model tests has been used to develop an envelope for over-prediction of bottom clearance, which can be considered when developing guidance for ship operators.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 148, 15 January 2018, Pages 234-246
Journal: Ocean Engineering - Volume 148, 15 January 2018, Pages 234-246
نویسندگان
Kevin McTaggart,