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pen shui tui jin chuan bo bian jie ceng ying xiang xi shu de ji suan fang fa yan jiu
Author(s): 
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Year: Issue:  10
Journal: Journal of Ship Mechanics

Keyword:  喷水推进边界层虚拟流管获流区域;
Abstract: 针对喷水推进船舶的边界层影响系数难以计算的问题,提出了一种基于积分运算的边界层影响系数计算方法.将边界层影响系数作为变量处理,通过求解推进泵吸收功率与发动机功率的平衡方程,得到了喷水推进系统的流量,基于流量的连续性定理,计算出喷水推进系统的有效进流厚度.以有效进流厚度为边界条件进行积分运算,最终推导了边界层影响系数的解析计算表达式.通过对某型喷水推进船舶的边界层影响系数进行校核,并通过仿真得到了边界层影响系数在一定推进功率下随速度的变化规律,验证了所提方法的正确性和有效性.
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