排水型船舶阻力CFD计算关键问题研究

Research on key issues in CFD calculation of displacement ship resistance

为了精确快速地计算排水型船的船舶阻力,文章对影响船模阻力和实船阻力计算精度以及效率的模型质量、网格方案、物理模型、边界条件及初始化、求解器设置等方面进行了深入研究,形成了排水型船舶阻力CFD计算方法的标准化和普适性的技术方案。基于该技术方案对2种典型的排水型船进行了船模阻力和实船阻力数值分析,并将数值计算结果与水池试验结果进行对比,结果表明,各航速下两者误差均在1%以内。

To accurately and quickly calculate the ship resistance of displacement ships,this paper presents an in-depth study of the model quality,grid scheme,physical model,boundary conditions and initial conditions,and solver settings that affect the accuracy and efficiency of the calculations of model-scale ship resistance and fullscale ship resistance,forming a standard and universal technical solution for the CFD calculation of displacement ship resistance.Based on this technical solution,this paper conducts a numerical analysis of model-scale ship resis⁃tance and full-scale ship resistance on two typical displacement ships and compares the numerical calculation results with the tank test results.The results show that the errors were both within 1%at each speed.