摘要
为了研究可充气聚焦器的展开过程及展开后的性能,以一个开口面积为20 m2,焦距为8 m的旋转抛物面型太阳能聚焦器为例建立了充气结构模型,采用控制体积法对一次和三次折叠的未充气状态的支撑杆及反射部件的展开过程进行了仿真计算。基于充气反射面展开后的几何模型,采用蒙特卡罗光线跟踪法,数值模拟了其对光线的聚焦性能。结果表明展开后的反射面聚焦效率约为理想设计曲面的57%,褶皱是其聚焦性能不高的主要原因。分析展开后结构的聚焦效率可以作为评价可充气展开结构展开性能优劣的一种新方法。
To study the deployment process and deployed characteristics of the inflatable concentrator, a paraboloidal dish concentrator, whose aperture and focal length are 20 m2 and 8 m respectively, is built and taken as an example. The deployment of the one-fold and three-fold inflatable support truss and reflecting part is simulated with the control volume method. Based on the geometrical model of a deployed reflecting surface, the concentrating characteristics on the receiving plane are performed with the Monte Carlo ray tracing method. The results show that the concentrating efficiency of the deployed structure is 57% of the designed one, and the low concentrating efficiency is mainly caused by the wrinkling of the reflecting surface. Analysis of unfolded structure＇s concentrating efficiency can be as a new method to evaluate the deployment performance of deployable structure.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2012年第1期73-78,共6页
Journal of Nanjing University of Science and Technology
基金
江苏高校优势学科建设工程资助项目
关键词
可充气聚焦器
展开
蒙特卡罗光线跟踪法
褶皱
数值模拟
inflatable concentrators
deployment
Monte Carlo ray tracing method
wrinkling
numerical simulation
作者简介
王磊磊（1982-），男，博士生，主要研究方向：太阳能利用，E—mail：wll-youth@163．com；
通讯作者：黄护林（1968-），男，博士，教授，主要研究方向：太阳能利用，磁流体流动与传热，E-mail：hlhuang@nuaa．edu．cn。
