A VR in-situ steering framework using particle-based visualization

Kawamura, Takuma ; Shimomura, Kazuya ; Idomura, Yasuhiro   

This paper proposes a virtual reality (VR)-based in-situ control framework called VR IS-PBVR for simulations in computational fluid dynamics. This framework enables users to observe simulation results in an immersive VR environment while the simulation runs on a supercomputer and interactively adjust simulation conditions based on the visualization results. VR IS-PBVR enables in-situ control without disrupting simulation execution by utilizing compressed visualization particles and file-based communication. Furthermore, by extending the KVS visualization library, which forms the basis of VR IS-PBVR, with OpenXR, we achieved an implementation compatible with general-purpose head-mounted displays. The effectiveness of this framework is demonstrated through an urban wind simulation using OpenFOAM. This example shows that combining immersive VR visualization with interactive steering enables more intuitive understanding and analysis of behavior during simulation execution.