Improvement on the accuracy of the CGBOS technique and development of a novel reconstruction method

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420848
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Chiba University
• Principal Investigator: Ota Masanori 千葉大学, 工学(系)研究科(研究院), 准教授 (60436342)
• Co-Investigator(Kenkyū-buntansha): MAENO Kazuo 木更津工業高等専門学校, 校長 (30133606)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 航空宇宙工学 / 定量的密度計測 / ４次元計測

Outline of Final Research Achievements

A telecentric optical system is introduced to the background oriented schlieren (BOS) technique to improve the accuracy. The drawbacks of conventional diverging right observation can be overcome. The optical arrangement and formula for telecentric BOS measurement and measurement results obtained by the colored-grid background oriented schlieren (CGBOS) technique have been discussed. Furthermore, the simultaneous multi-angle measurement system have been built up to realize the CT measurement of the unsteady phenomena. A novel reconstruction algorithm has also been developed.

Free Research Field

流体力学