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Plane shock wave interaction with a cylindrical water column
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0002-2915-6303
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0003-1475-5351
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.
2016 (English)In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 28, no 5, 056102Article in journal (Refereed) Published
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Text
Abstract [en]

A complex system of waves propagating inside a water column due to the impact of plane shock wave is investigated both experimentally and numerically. Flow features, such as, focusing of expansion waves generating large negative pressure, nucleation of cavitation bubbles, and a re-circulation zone are observed and discussed qualitatively and quantitatively. Experiments are conducted on a 22 mm diametrical water column hit by shock waves with Mach numbers 1.75 and 2.4 in a newly constructed exploding wire facility. A new technique to create a properly shaped, repeatable, large diameter water column with straight walls is presented. Qualitative features of the flow are captured using the shadowgraph technique. With the aid of numerical simulations the wave motions inside the column are analyzed; the spatial location of the expansion wave focusing point and the corresponding negative peak pressures is estimated.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2016. Vol. 28, no 5, 056102
Keyword [en]
Cavitation, Exploding wires, Cavitation bubble, Expansion wave, Large diameter, Negative pressures, Qualitative features, Shadowgraph technique, Shock wave interaction, Spatial location
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-189693DOI: 10.1063/1.4948274ISI: 000377709500038Scopus ID: 2-s2.0-84969134528OAI: oai:DiVA.org:kth-189693DiVA: diva2:948343
Funder
Swedish Research Council
Note

QC 20160711

Available from: 2016-07-11 Created: 2016-07-11 Last updated: 2016-07-11Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • Other locale
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Output format
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