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요약정보
港作拖船全回转推进器防护格栅设计 / Design of port tug Z-propeller protection gird
Resource Type
Academic Journal
Authors
童南都
;
冯晓东
;
操安喜
;
金永兴
;
TONG Nandu
;
FENG Xiaodong
;
CAO Anxi
;
JIN Yongxing
Source
上海海事大学学报 / Journal of Shanghai Maritime University
. 41(1):107-121
Subject
全回转推进器
防护格栅
攻角
阻力计算
Language
Chinese
ISSN
1672-9498
Online Access
Find it @ DONGA
초록
针对港作拖船在复杂水域作业时推进器极易遭遇杂物碰撞与吸附,损坏推进系统,影响推进效率等问题,设计一套类翼型截面式推进器防护格栅装置.对不同的格栅环肋与来流方向的夹角(攻角)进行分析计算,将格栅对推进器效率的影响等效为推进器在流场中的总阻力变化,确定一组最合理的攻角,在提供最大防护性能的前提下,将格栅对推进效率的影响降到最低.结果 表明,当内、外环肋攻角分别取6.5°、10°时,阻力增加率较小,流场变化平稳,符合设计指标要求,并能对推进器进行有效防护.
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