摘要
为了系统地计算水下航行体全套惯性类水动力系数,提高计算效率和计算精度,通过基于无粘模型的计算方法对水下航行体的运动进行了预报;通过UDF及动网格技术,对匀速运动和匀加速运动的SUBOFF模型进行了分析。设计了单方向速度线性变化的匀加速直线运动和匀加速回转运动,并通过换算和数值拟合处理得到了潜艇所受的惯性力和惯性类水动力系数。该系数与试验误差保证在6%之内,验证了所提方法的可行性及准确性。
For the purpose of systematically calculating the full set of hydrodynamic coefficients and improving the computational efficiency and accuracy, the inviscid model is used. Through the UDF method and dynamic mesh technology, the uniform motion and uniformly accelerated motion of SUBOFF model are analyzed. The uniformly accelerated linear motion and rotary motion changing velocity in a single direction is designed and the submariners inertial forces is gotten through translation. The inertial hydrodynamic coefficients is fitted through data and the calculation error is about 6% by comparison with experimental data. The results verifies the feasibility and accuracy of the calculation of inertial hydrodynamic coefficients based on the inviscid model.
出处
《海军工程大学学报》
CAS
北大核心
2014年第5期44-47,共4页
Journal of Naval University of Engineering
基金
国家部委基金资助项目(51314020203)
关键词
计算流体力学
惯性类水动力系数
无粘模型
非定常运动
UDF
动网格
computational hydrodynamics
inertial hydrodynamics coefficient
inviscid model
unsteady motion
UDF
dynamic mesh
