浮式垂直轴风机的动力学建模、仿真与实验研究

发布时间：2018-06-19 07:42

本文选题：浮式垂直轴风机 + 气动力-水动力耦合　；参考：《力学学报》2017年02期

【摘要】：考虑气动力和水动力的耦合研究浮式垂直轴风机系统的运动响应,将固定式垂直轴风机的气动载荷计算方法进一步推广到海上浮式垂直轴风机的气动载荷计算.考虑阻尼力、波浪力、风载荷、系泊力等,建立了浮式垂直轴风机系统的纵荡-垂荡-纵摇运动方程.考虑动态失速和浮式基础运动,基于双致动盘多流管理论,推导了风机叶片气动载荷计算公式,编制了数值计算程序.以Sandia 17 m风机为例,验证了气动载荷计算程序的正确性.最后进行了模型实验,其中模型的风机为Φ型达里厄垂直轴风机,支撑基础为桁架式Spar型浮式基础,将模型实验结果与数值计算结果进行了对比,验证了耦合计算程序.结果表明,数值计算得到的风机系统的垂荡、纵摇运动的RAO(幅值响应算子)曲线与模型实验结果吻合较好,验证了耦合程序的正确性.然而,由于数值计算与模型实验在运动自由度、阻尼、风载荷等方面存在差别,数值计算结果与模型实验结果仍有一定的差异.
[Abstract]:Considering the coupling of aerodynamic force and hydrodynamic force, the dynamic response of floating vertical shaft fan system is studied, and the aerodynamic load calculation method of fixed vertical shaft fan is further extended to the calculation of aerodynamic load of floating vertical shaft fan on the sea. Considering the damping force, wave force, wind load and mooring force, the equations of motion of floating vertical shaft fan system are established. Considering the dynamic stall and floating foundation motion, the calculation formula of aerodynamic load of fan blade is derived based on the theory of double actuated disk multi-flow tube, and the numerical calculation program is compiled. Taking Sandia 17 m fan as an example, the correctness of aerodynamic load calculation program is verified. Finally, the model experiment is carried out, in which the fan of the model is 桅 type Darieu vertical axis fan, and the supporting foundation is the Truss Spar floating foundation. The results of the model experiment are compared with the numerical results, and the coupled calculation program is verified. The results show that the rao (amplitude response operator) curves obtained by numerical calculation are in good agreement with the experimental results, and the correctness of the coupled program is verified. However, there are still some differences between numerical calculation and model experiment in terms of motion freedom, damping, wind load and so on.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;
【基金】：国家自然科学基金(51579176) 上海交通大学海洋工程重点试验室开放基金(1501) 天津市自然科学基金(16JCYBJC21200)资助项目
【分类号】：TK83;P75

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