Plasma and Fusion Research

Volume 11, 1405084 (2016)

Regular Articles

Two-Dimensional Simulation of a Plume Produced by Ablation in the Liquid Wall Chamber of KOYO-Fast
Hiroyuki FURUKAWA and Takayoshi NORIMATSU1)
Institute for Laser Technology, Nishi-ku, Osaka 550-0004, Japan
1)
Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
(Received 12 September 2015 / Accepted 6 April 2016 / Published 10 June 2016)

Abstract

An integrated two-dimensional ablation simulation code DECORE-2D (DEsign COde for REactor) has been developed to estimate the environment of the liquid wall chamber of KOYO-fast. Density profiles of ablated lead are estimated using DECORE-2D for the case of first ignition with 200 MJ fusion power output. To discuss the stagnation of ablated materials in the chamber, the divergence of ablated material with phase change was analyzed in two-dimensional planar geometry. The spread angle of a plume obtained by this simulation is roughly 1° . This result indicates that the stagnation of ablated materials can be discussed with straight flows from tiles tilted by 30° to the tangential direction.

Keywords

simulation, environment in chamber, liquid wall, plume, ablation, KOYO-fast

DOI: 10.1585/pfr.11.1405084

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