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Schlieren Tomography to Visualize Three-Dimensional Supersonic Flows

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31st International Symposium on Shock Waves 1 (ISSW 2017)

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Abstract

This work describes a way to deduce the 3D density gradient field using a set of focusing schlieren images taken close to each other. Focusing schlieren gives density gradient information corresponding to a narrow focal plane. However, it still contains contributions from adjacent planes, and it depends on the focusing optics. This work used 3D deconvolution algorithm to solve this problem. The point spread function (PSF) of the optical system is estimated experimentally, and the noise is modeled statistically. The deconvolution results show that the contribution from adjacent planes is minimized, and thus this tomographic approach can lead to better understanding of 3D compressible flows.

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References

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Author information

Authors and Affiliations

  1. Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai, India

    S. Vaisakh & T. M. Muruganandam

Authors
  1. S. Vaisakh
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  2. T. M. Muruganandam
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Editor information

Editors and Affiliations

  1. Department of Aerospace Engineering, Nagoya University, Nagoya, Japan

    Akihiro Sasoh

  2. Department of Energy and Environmental Engineering, Kyushu University, Kasuga, Fukuoka, Japan

    Toshiyuki Aoki

  3. Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan

    Masahide Katayama

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Vaisakh, S., Muruganandam, T.M. (2019). Schlieren Tomography to Visualize Three-Dimensional Supersonic Flows. In: Sasoh, A., Aoki, T., Katayama, M. (eds) 31st International Symposium on Shock Waves 1. ISSW 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-91020-8_48

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  • DOI: https://doi.org/10.1007/978-3-319-91020-8_48

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-91019-2

  • Online ISBN: 978-3-319-91020-8

  • eBook Packages: EngineeringEngineering (R0)

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