Two dimensional simulation of turbulent mixing in stagnation dynamics of implosion

Journal Article · Wed May 01 00:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50439· OSTI ID:397230

Sunahara, A; Takeuchi, H; Takabe, H ^[1]

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1. Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565 (Japan)

We have studied the evolution of Richtmyer-Meshkov instability and turbulent mixing in the deceleration phase of implosion process. It is found that the spectrum of the perturbation of the interface between the main fuel and hot spark regions is shifted to longer wavelength by the inverse-cascade process. It is also found that bouncing of a shock wave in the spark region enhances the inverse-cascade process. As for the nonlinear electron thermal conduction effect on the mixing, it is found that it does not affect drastically the growth of the mixing layer width in the deceleration phase, but enhances the cooling of the hot spark region in the final stage. It is concluded that the cooling of the hot spark region by the thermal conduction is enhanced by the growth of the mixing layer width and degrades the implosion performance. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 397230
• Report Number(s): CONF-950476-; ISSN 0094-243X; TRN: 96:029311
• Journal Information: AIP Conference Proceedings, Vol. 369, Issue 1; Conference: 12. international conference on laser interaction and related plasma phenomena, Osaka (Japan), 24-28 Apr 1995; Other Information: PBD: May 1996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
LASER IMPLOSIONS
PLASMA INSTABILITY
INERTIAL CONFINEMENT
TURBULENCE
TIMING PROPERTIES
SHOCK WAVES
THERMAL CONDUCTION
TWO-DIMENSIONAL CALCULATIONS