Schlieren visualization technique for high-enthalpy and low-density flow with LED light source

Naoki Morimoto; Jun Yamashita; Akihiko Tabata; Shigeru Aso; Yasuhiro Tani

doi:10.2514/6.2016-1070

Schlieren visualization technique for high-enthalpy and low-density flow with LED light source

Naoki Morimoto, Jun Yamashita, Akihiko Tabata, Shigeru Aso, Yasuhiro Tani

Space Systems Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A schlieren visualization technique for high-enthalpy and low-density test flow using an LED light source is described. An LED driver circuit was designed and was confirmed its response characteristics. An optical band-pass filter was inserted in the schlieren optical setup to mitigate luminescence emissions of the test flow. The test results indicate that this schlieren visualization technique with the LED light source and the corresponding band-pass filter is feasible for hypervelocity test facilities with low cost. The flow field was numerically reproduced with CFD, which indicates a quantitative threshold level for the feasibility of schlieren visualization.

Original language	English
Title of host publication	54th AIAA Aerospace Sciences Meeting
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)	9781624103933
DOIs	https://doi.org/10.2514/6.2016-1070
Publication status	Published - 2016
Event	54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States Duration: Jan 4 2016 → Jan 8 2016

Publication series

Name	54th AIAA Aerospace Sciences Meeting
Volume	0

Other

Other	54th AIAA Aerospace Sciences Meeting, 2016
Country/Territory	United States
City	San Diego
Period	1/4/16 → 1/8/16

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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10.2514/6.2016-1070

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Schlieren visualization technique for high-enthalpy and low-density flow with LED light source. / Morimoto, Naoki; Yamashita, Jun; Tabata, Akihiko et al.

54th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc, AIAA, 2016. (54th AIAA Aerospace Sciences Meeting; Vol. 0).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Morimoto, N, Yamashita, J, Tabata, A, Aso, S & Tani, Y 2016, Schlieren visualization technique for high-enthalpy and low-density flow with LED light source. in 54th AIAA Aerospace Sciences Meeting. 54th AIAA Aerospace Sciences Meeting, vol. 0, American Institute of Aeronautics and Astronautics Inc, AIAA, 54th AIAA Aerospace Sciences Meeting, 2016, San Diego, United States, 1/4/16. https://doi.org/10.2514/6.2016-1070

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title = "Schlieren visualization technique for high-enthalpy and low-density flow with LED light source",

abstract = "A schlieren visualization technique for high-enthalpy and low-density test flow using an LED light source is described. An LED driver circuit was designed and was confirmed its response characteristics. An optical band-pass filter was inserted in the schlieren optical setup to mitigate luminescence emissions of the test flow. The test results indicate that this schlieren visualization technique with the LED light source and the corresponding band-pass filter is feasible for hypervelocity test facilities with low cost. The flow field was numerically reproduced with CFD, which indicates a quantitative threshold level for the feasibility of schlieren visualization.",

author = "Naoki Morimoto and Jun Yamashita and Akihiko Tabata and Shigeru Aso and Yasuhiro Tani",

note = "Publisher Copyright: {\textcopyright} 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; 54th AIAA Aerospace Sciences Meeting, 2016 ; Conference date: 04-01-2016 Through 08-01-2016",

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doi = "10.2514/6.2016-1070",

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AU - Morimoto, Naoki

AU - Yamashita, Jun

AU - Tabata, Akihiko

AU - Aso, Shigeru

AU - Tani, Yasuhiro

PY - 2016

Y1 - 2016

N2 - A schlieren visualization technique for high-enthalpy and low-density test flow using an LED light source is described. An LED driver circuit was designed and was confirmed its response characteristics. An optical band-pass filter was inserted in the schlieren optical setup to mitigate luminescence emissions of the test flow. The test results indicate that this schlieren visualization technique with the LED light source and the corresponding band-pass filter is feasible for hypervelocity test facilities with low cost. The flow field was numerically reproduced with CFD, which indicates a quantitative threshold level for the feasibility of schlieren visualization.

AB - A schlieren visualization technique for high-enthalpy and low-density test flow using an LED light source is described. An LED driver circuit was designed and was confirmed its response characteristics. An optical band-pass filter was inserted in the schlieren optical setup to mitigate luminescence emissions of the test flow. The test results indicate that this schlieren visualization technique with the LED light source and the corresponding band-pass filter is feasible for hypervelocity test facilities with low cost. The flow field was numerically reproduced with CFD, which indicates a quantitative threshold level for the feasibility of schlieren visualization.

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BT - 54th AIAA Aerospace Sciences Meeting

PB - American Institute of Aeronautics and Astronautics Inc, AIAA

T2 - 54th AIAA Aerospace Sciences Meeting, 2016

Y2 - 4 January 2016 through 8 January 2016

ER -

Schlieren visualization technique for high-enthalpy and low-density flow with LED light source

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