摘要
根据船舶阻力成分及预报方法进行分析讨论,提出基于CFD的方法进行船舶阻力数值预报.分别基于势流和粘性流理论对船舶阻力进行预报,将阻力系数与试验值进行对比.基于粘性流体理论求解获得船体的粘性总阻力及摩擦阻力,基于势流理论直接求解欧拉方程获得船体兴波阻力.通过对某油船在各航速下的阻力理论计算结果与船模试验值的比较表明,该方法计算速度快,经济性好,且预报精确度高,完全满足工程需要,可以在实际工程使用.
According to the causes of ship resistance and prediction methods,we put forward a method of numer-ical prediction of ship resistance based on CFD.Based on the theories of potential flow and viscous flow,the re-sistance of the ship is evaluated,and the resistance coefficient is compared with the test value.By using the the-ory of ideal fluid,the Euler-equations are directly solved to obtain the wave-making resistance,and the hull total resistance and frictional resistance are obtained based on the theory of turbulent viscosity.Comparing with the ex-perimental results of a tanker advancing at different speeds,the new method of ship resistance prediction is eco-nomical,practical,and the results meets the engineering needs,applicable to practical engineering.
出处
《江苏科技大学学报（自然科学版）》
CAS
2014年第2期109-113,共5页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(51309061)
关键词
阻力数值预报
势流理论
粘性流体理论
摩擦阻力
船体总阻力
兴波阻力
CFD
numerical prediction of resistance
potential flow theory
viscous flow theory
frictional resistance
total resistance
wave resistance
computational fluid dynamics
