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自然界中的尘卷风蕴含着较大能量,据此提出的一种新型类尘卷风旋转风能系统已证实能够形成稳定旋转风场。带有预旋导流叶片的太阳能聚热棚是该系统中提供热源产生旋转气流的核心部件。本文通过数值模拟结合实验研究的方法,改变聚热棚模型的尺寸参数(聚热棚半径、叶片入射角度)和加热温差,模拟得到不同条件下出口处旋转风场特征风速值的变化规律,选取出适合的聚热棚入射角度;此外,通过模拟和实验结果与相似理论综合分析得出该入射角度下聚热棚尺寸与特征风速值在不同加热温度下的曲线关系图,并给出符合火星气候条件的同类曲线,为合理预测该系统结构及运行参数,以及更进一步太空中的应用前景提供重要参考。
The dust storm in nature contains a lot of energy. A new type of wind-like wind power system proposed by this paper has been proved to form a stable rotating wind field. A solar collector with pre-swirl vanes is a central part of the system that provides a source of heat for rotating air flow. In this paper, by changing the parameters of the greenhouse model (the radius of the greenhouse, the angle of incidence of the blade) and the heating temperature difference by numerical simulation combined with the experimental study, the changing regularity of the characteristic wind velocity at the exit wind field under different conditions is simulated. In addition, through the simulation and experimental results and the similarity theory comprehensive analysis of the incident angle of the polygon shed size and characteristic wind velocity curve at different heating temperatures, and gives the line with Mars The similar curve of climatic conditions provides an important reference for the reasonable prediction of the system structure and operating parameters and the application prospects in further space.