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Cooperative Research on Surface Propeller

水面螺旋桨合作研究

基本信息

批准号：
03302040
负责人：
NAKATAKE Kuniharu
金额：
$ 13.18万
依托单位：
KYUSYU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1993
项目状态：
已结题

项目摘要

1.Using four kinds of surface propellers, model tests were made in the towing tank, the cavitation tunnel and the high-speed circulating water channel. From experimental results, we obtained many interesting findings and confired that the supercavitating propellers are suitable for the surface propeller.,2.We developed a QCM code to use a new pointed horseshoe vortex system. This method can predict the propeller characteristics easily and obtain the equivalent 2-D wing. Combining this 2-D wing and the 2-D linear cavitating wing theory, we developed a computer code to evaluate the characteristics of cavitating prepellers. Calculated results showed good agreement with experients.3.We also developed a computer code to calculate the flow around the cavitating hydrofoil and applied it to the Waid foil and foils with lip cups, and confirmed that this method is very useful.4.The surface panel method was developed for the unsteady propeller problems. This method can calculate the instantaneous pressure distribution on the propeller blade.5.We developed the linear vortex panel method to calculate the flow about the nonlinear cavitating foil. This method was applied to the design of supercavitating propellers. The designed propellers showed good agreement with the experimental characteristics.6.Using QCM and BEM, we clarified numerically the mechanism that the propeller increases thrust and torque in cavitation tunnel compared with P.O.T.7.We developed the simple, efficient and accurate SQCM to calculate the flow around 2-D and 3-D wings, and applied SQCM to the problem of the tandem hydrofoil. SQCM has possibility to be used in various fields.

1.采用四种水面螺旋桨，在拖曳水池、空蚀洞和高速循环水槽中进行了模型试验。从实验结果中，我们得到了许多有趣的发现，并确认超空泡螺旋桨适用于水面螺旋桨。2.我们开发了一个QCM程序，该程序使用了一个新的尖马蹄涡系统。该方法可以方便地预测螺旋桨特性，并得到等效的二维机翼。结合二维翼型和二维线性空泡翼理论，我们开发了一个计算程序来评估空泡预桨的特性。3.编制了计算空泡翼型绕流的计算机程序，并将其应用于涡面翼型和带唇杯翼型，验证了该方法的有效性。4.发展了面元法求解螺旋桨非定常问题。该方法可以计算出螺旋桨叶片上的瞬时压力分布。5.发展了线性涡面元法来计算非线性空化翼型的绕流。将该方法应用于超空泡螺旋桨的设计。6.利用QCM和边界元法，对螺旋桨在空泡风洞中增加推力和扭矩的机理进行了数值分析。7.发展了简单、高效、高精度的SQCM方法，用于二维和三维机翼绕流的计算，并将SQCM方法应用于纵列式翼型的绕流问题。SQCM具有广泛的应用前景。