Effects of different poses and wind speeds on flow field of dish solar concentrator based on virtual wind tunnel experiment with constant wind

In order to improve structure performance of the dish solar concentrator,a three-dimensional model of dish solar concentrator was established based on the high-precision numerical algorithms.And a virtual wind tunnel experiment with constant wind is adopted to investigate the pressure distribution of the reflective surface,velocity distribution of the fluid domain for the dish solar concentrator in different poses and wind speeds distribution.Some results about wind pressure distribution before and after dish solar concentrator surface and wind load velocity distribution in the entire fluid domain had been obtained.In particular,it is necessary to point out that the stiffness at the center of the dish solar concentrator should be relatively raised.The results can provide a theoretical basis for the improvement of solar concentrator dish structure as well as the failure analysis of dish solar concentrator in engineering practice.

基于虚拟风洞的流体力学实验教学实践研究

针对流体力学教学中风洞实验难以开展的问题,提出构建虚拟风洞建设及运行与实验教学结合的目标。重点探讨了虚拟风洞在流体力学实验教学中的突出意义及其教学方式:(1)降低风洞实验教学成本,普及风洞实验教学,使学生得到充分的锻炼与实践;(2)实验过程直观化,抽象概念可视化,帮助学生加深理解CFD技术、流体力学课程和风洞实验流程;(3)引导学生思考优化风洞实验模型,教学与改善虚拟风洞实验平台相结合;(4)与工程案例相衔接,使风洞实验教学更具工程实践意义。