Open-source simulation of strongly-coupled fluid-structure interaction between non-conformal interfaces

Abstract

Design code-based “life-safety” requirements for structural earthquake and tsunami design offer reasonable guidelines to construct buildings that will remain standing during a tsunami or seismic event. Much less consideration has been given to assessing structural resilience during sequential earthquake and tsunami multi-hazard events. Such events present a series of extreme loading scenarios, where damage sustained during the earthquake influences structural performance during the subsequent inundation. Similar difficulties exist with respect to damage sustained during tropical events, as wind and fluid loading may vary with structural response or accumulated damage. To help ensure critical structures meet a “life-safety” level of performance during such multi-hazard events, analysis software capable of simulating simultaneous structural and fluid dynamics must be developed. To address this gap in understanding of non-linear fluid-structure-interaction (FSI), an open-source tool (FOAMySees) was developed for simulation of tsunami and wave impact analysis of post-earthquake non-linear structural response of buildings. The tool is comprised of the Open-source Field Operation And Manipulation software package and OpenSeesPy, a Python 3 interpreter of OpenSees. The programs are coupled via preCICE, a coupling library for partitioned multi-physics simulation. FOAMySees has been written to work in a Linux OS environment with HPC clusters in mind. The FOAMySees program offers a partitioned conventional-serial-staggered coupling scheme, with optional implicit iteration techniques to ensure a strongly-coupled two-way FSI solution. While FOAMySees was developed specifically for tsunami-resilience analysis, it may be utilized for other FSI applications with ease. With this coupled Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) program, tsunami and earthquake simulations may be run sequentially or simultaneously, allowing for the evaluation of non-linear structural response to multi-hazard excitation.

Coupled Multiphysics Simulation using FEA for Complex Fluid-Structure Interaction Problems

“…Potential indications to assess mental effort in HCI contexts are presented. The complexity of FSI may be quantified with the use of such methods [16]. This paper offers a critical evaluation of the present literature on interpersonal robotics.…”

Usage of a computer cluster for physics simulations using bullet engine and OpenCL

“…Conducting physical simulations (and determining collisions between objects in particular) is an essential application of numerical methods in contemporary computer science. With the emergence of new technologies based on simulation results, the enhancement of simulation methods is becoming increasingly important [1][2][3]. Even with hardware improvements, the requirements for such computations should be simplified since new, more complex problems emerge.…”

“…During the study, we researched the methods of calculating collisions in three-dimensional space to understand better at what level parallelization should occur in the cluster. This topic was chosen as it is relevant for many industries [1,2]. Moreover, we found few publications exploring related themes of conducting such simulations on a cluster or computational clouds, and commercial analogues developing in this direction are just beginning to appear [1][2][3].…”

“…This topic was chosen as it is relevant for many industries [1,2]. Moreover, we found few publications exploring related themes of conducting such simulations on a cluster or computational clouds, and commercial analogues developing in this direction are just beginning to appear [1][2][3].…”