Improvement of Background Oriented Schlieren Method Focused on Amplitude of Wavelet Transform
Improvement of Background Oriented Schlieren Method Focused on Amplitude of Wavelet Transform
复制标题
以小波变换幅度为中心的背景导向纹影法的改进
DOI:
10.1088/1757-899x/886/1/012037
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Hiro Kazuki
中科院分区:
文献类型:
--
作者:
Miyaoku Koki;Fukuoka Hiroshi;Nakamura Shigeto;Yao Masanori;Hiro Kazuki
The BOS method is a visualization method of density variation in the flow field. This method is simpler and cheaper to visualize than the Schlieren method. The primary purpose of this study is to propose WA-BOS (a simpler BOS method focusing on the amplitude of the Wavelet transform). Output images by WA-BOS and WP-BOS (BOS method focused on the phase of the Wavelet transform) and the Schlieren image were compared to verify the validity of the output images. Also, output images by the captured image lost periodic information partially were verified, in order to confirm the validity of the image processing for the deviation out of the domain of phase. The targets of visualization are the supersonic jet and the shock wave ejected from the shock tube. The measurement system consists of an LED, a sine pattern background image and a high-speed camera. As a result, the supersonic jet and the shock wave ejected from the shock tube are visible in the visualized image that was obtained by WA-BOS and WP-BOS. Moreover, it is found that WA-BOS can visualize a supersonic phenomenon without containing an error.
影响因子:
2.4
作者:
Michael A. Hill;E. Haering
通讯作者:
E. Haering
影响因子:
0.8
作者:
H. Fukuoka;M. Yaga;T. Takiya
通讯作者:
T. Takiya
DOI:
10.1299/kikaib.77.2391
发表时间:
2011
期刊:
影响因子:
--
作者:
J. Akatsuka;S. Nagai;S. Honami
通讯作者:
S. Honami