Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 71, No. 1A, pp. 530–534
Abstract: While the expansion of shock waves in gases follows the Cranz model law very closely and thus may be classed as pseudostationary, the same statement cannot be expected automatically to apply to the origin and expansion of turbulence areas. Various authors (e.g., Howard and Matthews) have shown through single exposures that pseudo-stationary expansion can be assumed nevertheless to apply also to turbulence areas. In continuation of the experimental work of H. Schardin, the expansion of turbulence on an edge in the shock-wave tube was examined with the aid of multiple-spark cameras, making observations both according to principles of focused shadow optics and of interference optics. These experiments showed that the expansion of turbulence is practically pseudostationary — i.e., after a certain time (in our experiments about 20 μsec has gone by); the velocity of expansion of the vortex becomes constant. The substantial influence of viscosity is thus limited to the very first phase of the formation of turbulence.
Publication Date: 1962-01-01
DOI: 10.5594/J18192
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J18192
Author(s): Heinz ReichenbachErnst Mach Institut, Eckerstrasse 4, Freiburg im Breisgau, Germany
Copyright: © 1962 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Wecken F. , “Pseudostationary flow phenomena,” Report 26/46, Institut Franco-Allemand de Recherches , St.-Louis, France , 1946 . EXTERNAL
2. Schardin H. , “An example of the utilization of the shock-wave tube for problems of nonsteady gas dynamics,” ZAMP , IX , 606 – 621 , 1958 . EXTERNAL
3. Bargmann V. , “On nearly glancing reflection of shocks,” OSRD-Report 5171, 1945 . EXTERNAL
4. Lighthill M. J. , “The diffraction of blast I,” Proc. Roy Soc. , 198 : 454 – 470 , 1949 . EXTERNAL
5. Jones D. M. Martin P. M. E. Thornhill C. K. , “A note on the pseudostationary flow behind a strong shock diffracted or reflected at a corner,” Proc. Roy. Soc., (A) , 209 : 238 – 248 , 1951 . EXTERNAL
6. Griffith W. Brickl D. E. , “Diffraction of strong shock waves,” Phys. Rev. , 89 : 451 – 453 , 1953 . EXTERNAL
7. Howard L. N. Matthews D. L. , “On the vortices produced in shock diffraction,” J. Appl. Phys. , 27 : 223 – 231 , 1956 . EXTERNAL
8. Rott N. , “Diffraction of a weak shock with vortex generation,” Journ. of Fluid Mech. , 1 : 111 – 128 , 1956 . EXTERNAL

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Heinz Reichenbach; Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18192

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Heinz Reichenbach; Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18192

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<span class="citation">Heinz Reichenbach; <cite>Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18192" target="_blank" rel="noopener">https://doi.org/10.5594/J18192</a></span>

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Heinz Reichenbach; Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
doi: 10.5594/J18192
url: https://doi.org/10.5594/J18192

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<li>
Heinz Reichenbach; <cite id="bib-10-5594-j18192">Paper N–9: Investigation by Spark Cinematography of the Behavior Pattern of Vortices</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18192</span>
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