复杂海洋环境中水平轴潮流能水轮机水动力学性能研究

Being believed as one of the most promising section of the ocean energy, tidal current energy has been rapidly progressing. With the development of tidal current energy technology, commercialization and large scale application demmands that the huge turbine's hydrodynamic performance, stability and safety in unsteady flow of complex ocean environment be studied. By using the mothed of theoretical analysis, numerical simulation and model testing combining the measured ocean environment data and papameters of turbines in operation conditions, large-scale or full-scale horizontal axis tidal current turbine's hydrodynamic performances under unsteady flow in complex ocean environment was studied. The horizontal axis tidal current turbine's performance in usteady flow effected by joint action of wave and tidal current, the influence of non-uniform flow cased by tidal current velocity gradient and bottom contour on the turbine, phenomenon of fluid-structure interaction between horizontal axis tidal current turbine in unsteady flow and the cavitation of huge tidal current turbine's blades were studied. By studying all these, the influence rules of different ocean environment parameters on large horizontal tidal current turbine's performances would be discovered and running conditions of the turbines under complex ocean environment would be predicted. All the research work will be a basis for future commercial application of tidal current exlploitation technology and design and check of large horizontal axis tidal current turbine.

潮流能是一项非常有产业化前景的海洋能门类，近年来发展迅速。随着潮流能技术走向产业化和规模化，需要对示范工程运行中的大型水轮机在复杂海洋环境下非定常流中的水动力学性能及安全稳定性进行研究。本项目针对示范工程中运行的大比尺或实尺水平轴潮流能水轮机，利用理论分析、数值模拟、模型试验结合实际工程中实测海洋环境数据和水轮机运行参数，研究其在实际复杂海洋环境中非定常流场中的各项性能。研究内容包括水轮机在波浪和潮流联合作用下非定常流中的水动力学性能，沿水深潮流流速梯度和海底地形所造成的非均匀流对水轮机水动力学性能的影响规律，非定常流场中水平轴潮流能水轮机的流固耦合问题，以及大型潮流能水轮机叶片的空化现象。通过上述研究，掌握海洋环境要素对大比尺水平轴潮流能水轮机性能的影响规律，对复杂海洋环境中的水轮机的运行状况做出预测。为潮流能技术的规模化、产业化应用以及大型水平轴潮流能水轮机的设计与校核提供依据。

潮流能是一项非常有产业化前景的海洋能门类，近年来发展迅速。随着潮流能技术走向产业化和规模化，需要对示范工程运行中的大型水轮机在复杂海洋环境下非定常流中的水动力学性能及安全稳定性进行研究。本项目针对示范工程中运行的大比尺或实尺水平轴潮流能水轮机，利用理论分析、数值模拟、模型试验结合实际工程中实测海洋环境数据和水轮机运行参数，研究其在实际复杂海洋环境中非定常流场中的各项性能。研究内容包括水轮机在波浪和潮流联合作用下非定常流中的水动力学性能，沿水深潮流流速梯度和海底地形所造成的非均匀流对水轮机水动力学性能的影响规律，非定常流场中水平轴潮流能水轮机的流固耦合问题，以及大型潮流能水轮机叶片的空化现象。通过上述研究，掌握海洋环境要素对大比尺水平轴潮流能水轮机性能的影响规律，对复杂海洋环境中的水轮机的运行状况做出预测。为潮流能技术的规模化、产业化应用以及大型水平轴潮流能水轮机的设计与校核提供依据。