A large scale parallel fluid‐structure interaction computing platform for simulating structural responses to a detonation shock

Abstract

Due to the intrinsic nature of multi-physics, it is prohibitively complex to design and implement a simulation software platform for study of structural responses to a detonation shock. In this article, a partitioned fluid-structure interaction computing platform is designed for parallel simulating structural responses to a detonation shock. The detonation and wave propagation are modeled in an open-source multi-component solver based on OpenFOAM and blastFoam, and the structural responses are simulated through the finite element library deal.II.To capture the interaction dynamics between the fluid and the structure, both solvers are adapted to preCICE. For improving the parallel performance of the computing platform, the inter-solver data is exchanged by peer-to-peer communications and the intermediate server in conventional multi-physics software is eliminated. Furthermore, the coupled solver with detonation support has been deployed on a computing cluster after considering the distributed data storage and load-balancing between solvers. The 3D numerical result of structural responses to a detonation shock is presented and analyzed. On 256 processor cores, the speedup ratio of the simulations for a detonation shock reach 178.0 with 5.1 million of mesh cells and the parallel efficiency achieve 69.5%. The results demonstrate good potential of massively parallel simulations. Overall, a general-purpose fluid-structure interaction software platform with detonation support is proposed by integrating open source codes. And this work has important practical significance for engineering application in fields of construction blasting, mining, and so forth.

OpenFOAM-preCICE: Coupling OpenFOAM with External Solvers for Multi-Physics Simulations

“…Munaf et al extended and applied the adapter for simulating inductively-coupled plasma wind tunnels with the OpenFOAM-based PATO solver [67]. Finally, the OpenFOAM-based project blastFoam offers a fluid-structure interaction tutorial case for preCICE (coupling blastFoam and CalculiX) 35 , while Zhang et al [68] have also used the adapter for FSI simulations in the context of detonations (coupling OpenFOAM and deal.II). 32 Central issue for volume coupling support: https://github.com/precice/openfoam-adapter/issues/229 33 OpenFOAM Multiphase Heater Simulation: https://blog.tefe.cc/post/2020/01-watercooker/ 34 DHCAE Tools GmbH: preCICE https://www.dhcae-tools.com/preCICE.html 35 blastFoam tutorial using preCICE: https://github.com/synthetik-technologies/blastfoam/tree/master/tutorials/ preCICE/flap…”

Special issue on new trends in high‐performance computing: Software systems and applications

“…The eleventh paper titled “A large scale parallel fluid‐structure interaction computing platform for simulating structural responses to a detonation shock” by Yang et al 10 presents a partitioned fluid‐structure interaction computing platform designed for parallel simulating structural responses to a detonation shock. The 3D numerical result of structural responses to a detonation shock is presented and analyzed.…”