实验流体力学2025，Vol.39Issue(4)：48-54,7.DOI:10.11729/syltlx20220047
1.2 m大视场聚焦纹影技术
1.2 m large-field focusing schlieren technique
谢爱民 1邢彦昌 1王敏 2部绍清1
作者信息
- 1. 中国空气动力研究与发展中心 超高速空气动力研究所,绵阳 621000
- 2. 中国兵器装备集团自动化研究所,绵阳 621000
- 折叠
摘要
Abstract
In the conventional"Z"structure schlieren technique,due to the limitation of large-size optical element materials and processing technology,the size of the test field is usually less than 1 meter.In order to show the flow field of a large-scale model in a wind tunnel,the focusing schlieren technique is proposed to show the flow field in the 1.2 m test area.According to the imaging principle,the large size Fresnel lens are replaced by a matrix light source.After solving the key technologies such as the engineering design of large-size light source splicing,the development of large-diameter focusing lens and the production of high-definition imaging screen,two sets of focusing schlieren systems with the test field of view of 1.2 m×1.2 m were established,and the schlieren images of the hypervelocity flow field with high sensitivity were obtained in the wind tunnel.The flow visualization with larger field is expected to be realized through the splicing of larger size light sources.关键词
聚焦纹影/流动显示/纹影/大视场/LED光源Key words
focusing schlieren/flow visualization/schlieren/large field/LED light source分类
航空航天引用本文复制引用
谢爱民,邢彦昌,王敏,部绍清..1.2 m大视场聚焦纹影技术[J].实验流体力学,2025,39(4):48-54,7.
