Wei Hu, Lijun Yang, Yue Zhang, Pengcheng Wang, Jingxuan Li
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引用次数: 0
Abstract
This paper presents the application of various artificial fractal-like background patterns and a digital image correlation algorithm, to enhance the accuracy of image displacement measurement within background-oriented schlieren technology. A novel method for generating new fractal-like patterns is proposed, allowing for the combination of different pattern strengths. A more robust image displacement estimation algorithm that considers the self-affine property inherent in fractal patterns is introduced. Various synthetic flow tests, as well as real supersonic flow and combustion tests, were conducted to demonstrate the advantages of the estimation algorithm and to gain a comprehensive understanding of the applicability of different fractal-like backgrounds.
期刊介绍：
Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.
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