Fast particle generation technique for visualizing multi-physics data via particle based volume rendering

Kawamura, Takuma ; Idomura, Yasuhiro   ; Miyamura, Hiroko  ; Takemiya, Hiroshi

Client-Server type remote visualization system using Particle-Based Volume Rendering (PBVR) efficiently visualizes large-scale data located on remote supercomputer system. Multi-dimensional (2D) transfer function is efficient technique to extract the munite structure using a physical value and its absolute value of gradient. We extended the multi-dimensional transfer function to extract any slice surface of iso-surface for multi-variate data and developed PBVR particle generation method for multi-dimensional transfer function, which enables to treat multi-variate data on supercomputer. We applied this technique to the result of numerical simulation for relocation behavior of molten debris in nuclear reactor, and extract the forms of the molten debris and mapped thermal distribution.