基于COMSOL的船体增阻板可行性分析

Feasibility Analysis of Ship Drag-Increasing Plate Based on COMSOL

为研究船体增阻板的有效性和稳定性,采用RANS法探究增阻板的增阻效果,并分析流固耦合作用下增阻板的应力和位移情况。研究表明:数值模拟与经验公式得到的船舶阻力吻合较好,说明COMSOL有限元方法具有一定可行性,可用于预测带有增阻板的船舶阻力;船模在加装增阻板后,船舶的压阻力快速增加,平均增阻率达1463%,但增阻板与船体接触部位应力较大,容易造成船舶损伤。研究成果可为船体安全评估以及特殊情况下的增阻研究提供一定参考。

In order to study the effectiveness and stability of the ship drag-increasing plate,RANS method is used to explore the drag-increasing effect of the plate,and to analyze the force and displacement of the plate under fluid-solid coupling.The research results show that:The ship resistance obtained by numerical simulation is in good agreement with the empirical formula,which indicates that COMSOL finite element method is feasible to predict ship resistance with drag-increasing plate;The pressure resistance of the ship increases rapidly after adding the drag-increasing plate,and the average drag-increasing rate reaches 1463%.However,the contact stress between the drag-increasing plate and the hull is large,which is easy to cause ship damage.The research results can provide some references for the safety assessment of ship hull and the research of increasing resistance under special circumstances.