| 李志远, 杨建民, 吕海宁, 秦睿.基于全回转推进的半潜式平台操纵性预报研究[J].海洋工程,2025,(4):109~122 |
| 基于全回转推进的半潜式平台操纵性预报研究 |
| Maneuvering prediction of semi-submersible platform with pod propulsions |
| 投稿时间：2024-06-12 |
| DOI：10.16483/j.issn.1005-9865.2025.04.010 |
| 中文关键词: 半潜式平台 约束模试验 全回转桨 操纵性预报 航向稳定性 |
| 英文关键词:semi-submersible platform captive model test pod propulsion maneuvering prediction course stability |
| 基金项目:国家重大科技基础设施研发专项（SSZX22001） |
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| 摘要点击次数: 8 |
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| 中文摘要: |
| 为了保证全回转推进半潜式平台的航行安全，在设计初期需对其操纵性进行预报。针对下浮体水动力特性及全回转推进器敞水性征，采用分离模型（mathematical model group，简称MMG）方法建立半潜式平台操纵性运动方程。首先，通过数值计算约束模型试验获得下浮体的水动力特性，明确呆木对平台航向稳定性的改善作用。试验结果发现平台纵向水动力系数具有强非线性特点。其次，利用数值方法开展全回转桨敞水试验，分析其螺旋桨推力、舱体侧向力随进速系数、偏转角的变化规律，结果表明在操纵性预报过程中舱体侧向力不可忽略。接着，通过数值计算带桨约束模型试验，获得不同推进器偏转角作用时下浮体水动力变化情况，以明确全回转桨抽吸作用造成的干扰。最后，根据建立的全回转推进半潜式平台MMG模型，利用MATLAB软件对其操纵性进行仿真并对比试验结果。验证方法具有一定精度，能够满足初级阶段操纵性预报需要。 |
| 英文摘要: |
| To ensure the navigation safety of a semi-submersible platform with pod propulsions, maneuvering performance needs to be predicted during the preliminary design stage. Considering the hydrodynamic characteristics of platform and the open-water performance of pod propulsions, the maneuvering motion equations of the semi-submersible platform are established using the MMG (mathematical model group) method. Firstly, the hydrodynamic characteristics of the submerged body are obtained through numerical captive model tests, which confirm the positive effect of the skeg on improving course stability. The results also reveal strong nonlinearity in the platform’s longitudinal hydrodynamic coefficients. Secondly, numerical open-water tests of pod propulsions are conducted to analyze the variations in propeller thrust and lateral force with respect to advance coefficient and deflection angle. The results show that the lateral force generated by the pod housing plays a significant role in maneuvering predictions and should not be neglected. Then, further numerical captive tests with propulsions are carried out to obtain the changes in hydrodynamic characteristics under different propeller deflection angles, clarifying the interaction effects induced by pod suction. Finally, based on the established MMG model for the pod-driven semi-submersible platform, maneuvering simulations are conducted using MATLAB and validated against test data. The results demonstrate that the proposed method provides sufficient accuracy to meet the requirements for maneuverability prediction in the early design phase. |
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