基于CFD的船舶总阻力数值模拟

Prediction of Ship Resistance Based on CFD Method

为了实现利用CFD准确预报船舶阻力,选取2种船舶线型,对静水下不同航速时的阻力进行模拟,考虑船舶的对称性,使用半船进行建模,为减少网格数量并尽量保证精度,采用局部加密进行网格处理,采用VOF法对自由液面进行模拟,与船模试验数据对比表明,本方法具有较高的数值精度。

In order to accurately predict ship total resistance by computational fluid dynamics(CFD) method,two ship lines were selected to simulate the resistance under different speeds in calm water. Considering the symmetry of the hull,the half model was established to simulate the resistance,and local mesh refinement was adopted to reduce the number of meshes and ensure the precision. The VOF method was used to capture the free surface. Compared with ship model test data,this method has higher numerical accuracy.