﻿ 基于CFD方法求取带呆木船Xu回归公式

# 基于CFD方法求取带呆木船Xu回归公式The Regression Formula for Ship with Dead Wood Based on CFD

Abstract: Dynamic positioning technology is a high and new technology in the process of ocean development, of which the dynamic positioning supply vessel (attacked with wood in the tail) which is the main ship type has important implications for researching the motion mathematical model. Taking the ship appendaged with dead wood as the research subject, series of ship model is generated through hull form transformation. The CFD method is applied to numerically simulate the drag motion to calculate the hydrodynamic force on the models in different drift speeds. Then the linear velocity derivatives of different types by the least squares fitting are gotten. On this basis, the regression formula of location hydrodynamic derivatives is obtained through multiple regression. This provides an easy method to determine hydrodynamic derivatives in the preliminary design stage.

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