Moiré tomography for the diagnoses of flow fields with consideration of ray propagation

In this paper, the multiresolution analysis (MRA) method is used to preprocess moiré fringes, which can reduce the number of data points and increase computation speeds. To discuss the applicability of the method, a candle combustion flow field is chosen as an example for experiment by moiré deflectometry. First, moiré fringes are preprocessed by the MRA method. Then, phase information extraction and refractive index reconstruction are performed on the three-level low-frequency approximation components. Finally, the involved results prove that the calculation time required for phase information extraction and refractive index reconstruction is greatly reduced based on the moiré fringes preprocessed by MRA method. The relative error could be accepted if the suitable approximation level is applied.

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Phase information extraction for moiré fringes based on multiresolution analysis

Chen

Cheng

2020

Appl. Opt.

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基于边界寻找算法的高温复杂流场区域划分

Weihao¹,

Yunyun²,

Yayi³

et al. 2023

激光与光电子学进展

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Moiré tomography for the diagnoses of flow fields with consideration of ray propagation

Cited by 2 publications

References 21 publications

Phase information extraction for moiré fringes based on multiresolution analysis

Phase information extraction for moiré fringes based on multiresolution analysis

基于边界寻找算法的高温复杂流场区域划分

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