The invention provides a ship water elasticity bidirectional coupling numerical algorithm based on CFD-MBD. The ship water elasticity bidirectional coupling numerical algorithm comprises the following steps that external force and external torque of a ship under the action of wave flow are determined; inputting the segmented hydrodynamic load of the ship into a three-node beam model in a ship body beam multi-body motion calculation module, and calculating the bending deformation of the ship body beam through the three-node beam model; inputting the calculated bending deformation result of the hull beam into a flow field grid deformation updating module, updating node coordinates of a flow field body-fitted grid through the flow field grid deformation updating module, and then updating a flow field computational domain grid by solving a Laplacian equation; carrying out flow field calculation on the updated flow field calculation domain grid; the method has the beneficial effects that water elasticity bidirectional coupling numerical calculation under the ship elasticity effect can be realized, so that the water elasticity response influence caused by strong nonlinear wave slamming can be better captured, data support is provided for strength analysis of a ship structure, and better guarantee is provided for safety check of a ship.

    本发明提供一种基于CFD‑MBD的船舶水弹性双向耦合数值算法,包括以下步骤:确定船舶在浪流作用下的外力和外力矩;将船舶分段水动力载荷输入船体梁多体运动计算模块内的三节点梁模型,通过所述三节点梁模型计算船体梁的弯曲变形;将计算出船体梁的弯曲变形结果输入流场网格变形更新模块,通过流场网格变形更新模块更新流场贴体网格节点坐标,再通过求解拉普拉斯方程更新流场计算域网格;对更新后的流场计算域网格开展流场计算;本发明的有益效果为:本发明可以实现考虑船舶弹性作用下的水弹性双向耦合数值计算,从而能够更好地捕捉强非线性波浪砰击带来的水弹性响应影响,进而为船体结构的强度分析提供数据支撑,为船舶的安全性校核提供更好的保障。


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    Title :

    CFD-MBD-based ship hydroelasticity bidirectional coupling numerical algorithm


    Additional title:

    一种基于CFD-MBD的船舶水弹性双向耦合数值算法


    Contributors:
    WANG JIANHUA (author) / XIAO JIAWEI (author) / HE FAN (author) / WAN DECHENG (author)

    Publication date :

    2024-06-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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