Improvement in spatial resolution of background-oriented schlieren technique by introducing a telecentric optical system and its application to supersonic flow

被引：32
|
作者：
Ota, Masanori [1 ]
Leopold, Friedrich [2 ]
Noda, Ryusuke [1 ]
Maeno, Kazuo [3 ]
机构：
[1] Chiba Univ, Grad Sch Engn, Inage Ku, Chiba 2638522, Japan
[2] French German Res Inst St Louis ISL, F-68301 St Louis, France
[3] Kisarazu Natl Coll Technol, Chiba 2920041, Japan
来源：
EXPERIMENTS IN FLUIDS | 2015年 / 56卷 / 03期
关键词：
DENSITY-MEASUREMENTS;
D O I：
10.1007/s00348-015-1919-5
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A telecentric optical system is applied to the background-oriented schlieren (BOS) technique to improve accuracy, overcoming the drawbacks of conventional diverging light observation. This paper describes the optical arrangement and formula for telecentric BOS measurement and presents measurement results obtained by the colored-grid background-oriented schlieren technique to confirm the theoretical prediction. The application of the new approach for a large-scale supersonic wind tunnel test is reported.
引用
收藏
页码：1 / 10
页数：10
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