Ship Displacement Form Factor Prediction Through the Application of the Robust Least Squares Method

Q2 Agricultural and Biological Sciences

International Review of Mechanical Engineering Pub Date : 2023-07-31 DOI:10.15866/ireme.v17i7.24102

Widodo Widodo, Abdul Ghofur, Arifin Arifin, Sahlan Sahlan, Mochamad Saiful

引用次数: 0

Abstract

A ship model test is considered one of the most effective methods of determining the size of a ship's drag, where the ship's shape factor determines the ship's drag at full scale. The use of the Prohaska method to determine the value of the form factor can be carried out experimentally by drawing a ship model in the towing tank basin with a Fr of 0.1-0.2. This research is a continuation of the research of Widodo et al. by utilizing the main ship data such as LWL, B, CB, CP, CM, WSA, T, and ∆. The S-estimation RLS method is used. In this method, the error value obtained is 0.1-3%, which is a bias value between the actual and the predicted values. This very small bias value can be used as a reference for using the regression equation in order to obtain form factor values as an alternative to the Prohaska method. Subsequent research is the process of validating the form factor from the s-estimation RLS and the Prohaska method through the displacement ship model resistance test data.

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应用鲁棒最小二乘法进行船舶排水量形状因子预测

船舶模型试验被认为是确定船舶阻力大小的最有效方法之一，其中船舶的形状因素决定了船舶在全尺寸时的阻力。利用Prohaska方法确定形状因子的值，可以通过在拖曳水池中绘制船舶模型进行实验，其Fr为0.1-0.2。本研究是对Widodo等人研究的延续，利用了LWL、B、CB、CP、CM、WSA、T、∆等主要船舶数据。采用s估计RLS方法。在该方法中，得到的误差值为0.1-3%，这是实际值与预测值之间的偏差值。这个非常小的偏差值可以用作使用回归方程的参考，以便获得形状因子值，作为Prohaska方法的替代方法。随后的研究是通过排水量船模阻力试验数据，从s估计RLS和Prohaska方法验证形状因子的过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Review of Mechanical Engineering Engineering-Mechanical Engineering

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： The International Review of Mechanical Engineering (IREME) is a peer-reviewed journal that publishes original theoretical and applied papers on all fields of mechanics. The topics to be covered include, but are not limited to: kinematics and dynamics of rigid bodies, vehicle system dynamics, theory of machines and mechanisms, vibration and balancing of machine parts, stability of mechanical systems, computational mechanics, advanced materials and mechanics of materials and structures, plasticity, hydromechanics, aerodynamics, aeroelasticity, biomechanics, geomechanics, thermodynamics, heat transfer, refrigeration, fluid mechanics, energy conversion and management, micromechanics, nanomechanics, controlled mechanical systems, robotics, mechatronics, combustion theory and modelling, turbomachinery, manufacturing processes, new technology processes, non-destructive tests and evaluation, new and important applications and trends.