Effects of liquid viscosity on laser-induced shock dynamics

Hiroki Kurahara, Keita Ando

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We experimentally study the effects of viscosity on laser-induced shockwave in glycerol-water solution. A shockwave is generated through rapid expansion of plasma, which is induced by focusing a 6 ns pulse laser (532 nm) of energy fixed at 1.66 ± 0.22 mJ into 80, 90, 100 wt% glycerol-water solution. The shockwave propagation is recorded by an ultra-high-speed camera taken at 100 Mfps together with a pulse laser stroboscope. The photographs are used to determine the shock front position as a function of time, which allows for calculating the shock pressure according to the stiffened-gas type Rankine–Hugoniot relation. It turns out that the initial plasma pressure is reduced by having higher glycerol concentration (i.e., higher viscosity); therefore, wave steepening effect is deemphasized, resulting in a smaller decay rate.

Original languageEnglish
Title of host publicationMultiphase Flow
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859087
DOIs
Publication statusPublished - 2019 Jan 1
EventASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019 - San Francisco, United States
Duration: 2019 Jul 282019 Aug 1

Publication series

NameASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
Volume5

Conference

ConferenceASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
CountryUnited States
CitySan Francisco
Period19/7/2819/8/1

Fingerprint

Viscosity of liquids
Glycerol
Lasers
Laser pulses
Stroboscopes
Viscosity
Plasmas
Wave effects
Water
High speed cameras
Gases

Keywords

  • Laser-induced shockwave
  • Ultra-high-speed photography
  • Viscous damping

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Kurahara, H., & Ando, K. (2019). Effects of liquid viscosity on laser-induced shock dynamics. In Multiphase Flow (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019; Vol. 5). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/AJKFluids2019-5151

Effects of liquid viscosity on laser-induced shock dynamics. / Kurahara, Hiroki; Ando, Keita.

Multiphase Flow. American Society of Mechanical Engineers (ASME), 2019. (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019; Vol. 5).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kurahara, H & Ando, K 2019, Effects of liquid viscosity on laser-induced shock dynamics. in Multiphase Flow. ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019, vol. 5, American Society of Mechanical Engineers (ASME), ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019, San Francisco, United States, 19/7/28. https://doi.org/10.1115/AJKFluids2019-5151
Kurahara H, Ando K. Effects of liquid viscosity on laser-induced shock dynamics. In Multiphase Flow. American Society of Mechanical Engineers (ASME). 2019. (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019). https://doi.org/10.1115/AJKFluids2019-5151
Kurahara, Hiroki ; Ando, Keita. / Effects of liquid viscosity on laser-induced shock dynamics. Multiphase Flow. American Society of Mechanical Engineers (ASME), 2019. (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019).
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