基于物面重叠的多附体船舶阻力数值模拟

Resistance Numerical Simulation of Ship with Appendages Based on Surface Overlap

阐述物面重叠技术,介绍重叠网格的基本原理以及物面重叠的处理方法,在此基础上采用单相Level-Set捕捉自由面方法和RANS方程对某型带多件附体的船舶进行阻力数值模拟,对其流场和自由面波形进行分析。与模型试验结果进行对比发现:数值计算结果与试验结果吻合良好,误差满足工程精度要求,验证了物面重叠技术应用于多附体船舶阻力数值模拟的可靠性。

The surface overlap technique is explained. The basic principle of overlap grid and the surface overlap processing method are introduced. On the basis, the resistance numerical simulation of a ship with appendages by using single phase Level-set for catching free surface method and RANS equation. The flow fieM and free surface wave are analyzed. Comparing with the model test results, it is found that numerical calculation results are in good agreement with the test results, while error can meet the engineering accuracy requirements. It verifies that the surface overlap technique is reliable in applying on the resistance numerical simulation for ship with appendages.