摘要
依据库塔条件反映物理真实的基本精神,考虑尾涡强度沿流线衰减,修正了Morino数值库塔条件,建立了考虑泄出自由涡衰减影响的螺旋桨面元计算模型.主要通过数值计算结果说明涡的衰减方式基本满足指数衰减规律.将这种数值库塔条件应用到螺旋桨扰动场的数值分析中,讨论了相关参数的确定原则和具体方法,该计算模型可以较准确地预测船舶螺旋桨扰动场,为理论研究船舶螺旋桨的激振力和噪音、桨舵干扰提供了一个新途径.数值分析结果证明,考虑涡强衰减的螺旋桨面元计算模型是可行的.
A propeller panel model was established according to basic Kutta condition principles that consid- er attenuation of the intensity of a wake vortex. Numerical calculations reveal that attenuation is exponential and proves that a model of the attenuation of the intensity of a propeller＇s wake vortex is feasible. This model can predict the disturbing field of marine propellers more precisely, paving the way for theoretical research on excitation force, noise, and interactions between the propeller and helm.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2007年第8期847-851,共5页
Journal of Harbin Engineering University
关键词
螺旋桨面元法
数值库塔条件
螺旋桨扰动场
涡衰减
panel method propeller numerical Kutta condition disturbing field of propeller attenuation vortex
