基于CFD的船舶总阻力数值模拟
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摘要
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.
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.
引文
[1]倪崇本,朱仁传,缪国平,等.一种基于CFD的船舶总阻力预报方法[J].水动力学研究与进展A辑,2010,25(5):579-586.
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[3]SCHWEIGHOFER J. REGNSTROM B. STARKE A. R.G. Tzabiras. Viscous flow computations of two existing vessels at model and full scale ship Reynolds numbers-a study carried out within the European Union project EFFORT[C]. International Conference on Computational Methods in Marine Engineering,2005.
[4]刘应中,张怀新,李谊乐,等. 21世纪的船舶性能计算和RANS方程[J].船舶力学,2001(5):66-84.
[5]张亮,李云波.流体力学[M].哈尔滨:哈尔滨工程大学出版社,2008
[6]曲宁宁.基于黏流阻力数值计算的肥大型船尾部线型优化方法研究[D].上海:上海船舶及海洋工程研究所,2011.
[7]黄少锋,张志荣,赵峰,等.带自由面肥大船粘性绕流场的数值模拟[J].船舶力学,2008(1):46-53.
[2]RAVEN HOYTE C,STARKE BRAM. Efficient methods to compute steady ship viscous flow with free surface[C]. 24th Symposium on Naval Hydrodynamics,Fukuoka,Japan,2002.
[3]SCHWEIGHOFER J. REGNSTROM B. STARKE A. R.G. Tzabiras. Viscous flow computations of two existing vessels at model and full scale ship Reynolds numbers-a study carried out within the European Union project EFFORT[C]. International Conference on Computational Methods in Marine Engineering,2005.
[4]刘应中,张怀新,李谊乐,等. 21世纪的船舶性能计算和RANS方程[J].船舶力学,2001(5):66-84.
[5]张亮,李云波.流体力学[M].哈尔滨:哈尔滨工程大学出版社,2008
[6]曲宁宁.基于黏流阻力数值计算的肥大型船尾部线型优化方法研究[D].上海:上海船舶及海洋工程研究所,2011.
[7]黄少锋,张志荣,赵峰,等.带自由面肥大船粘性绕流场的数值模拟[J].船舶力学,2008(1):46-53.