Hull-Propeller交互

Aditya Kolakoti
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引用次数: 0

摘要

为了前进,船舶需要推力,推力是由船体后面的螺旋桨旋转产生的。螺旋桨是用来产生推力来推动船舶的。螺旋桨通过螺旋桨叶片的两个表面(称为正、背)之间的压力差产生推力。气流的入射角在产生每个叶片部分(通常是机翼部分)的压力差方面起着重要作用。可调螺距螺旋桨可以调节来流入射,并能更好地控制由其产生的推力。传统上螺旋桨的推力和扭矩是通过模型试验来预测的。这需要更多的时间、人力、空间和成本。目前,CFD在水动力设计中越来越受欢迎,因为它在时间、人力、空间和成本上都相对节省。
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Hull-Propeller Interaction
For moving ahead ship needs thrust, which is generated by rotating propeller behind its hull. Propellers are used to generate thrust to propel marine vehicles. Propeller generates thrust by virtue of the pressure difference between two surfaces of the propeller blade, called face and back. The incident angle of the flow plays a major role in generating this pressure difference over every blade section (which is an aerofoil section in general). A controllable pitch propeller can adjust incidence of incoming flow and can offer better control over the thrust generated by it.Traditionally thrust and torque of a propeller, is predicted by model test. This takes more time,manpower, space and cost. In present time CFD is getting popular for hydrodynamic designs as it give relative saving in time, manpower, space and cost.
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Index Propeller Series Data Introduction to Ship Propulsion Holtrop and Mennen's Method Wave Energy and Wave Propagation
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