On the Development of a Java-Based Tool for Multifidelity Modeling of Coupled Systems: LDRD Final Report

Abstract

This report describes research and development of methods to couple vastly different subsystems and physical models and to encapsulate these methods in a Java TM -based framework. The work described here focused on developing a capability to enable design engineers and safety analysts to perform multifidelity, multiphysics analyses more simply. In particular this report describes a multifidelity algorithm for thermal radiative heat transfer and illustrates its performance. Additionally, it describes a module-based computer software architecture that facilitates multifidelity, multiphysics simulations. The architecture is currently being used to develop an environment for modeling the effects of radiation on electronic circuits in support of the FY

On Developing a Multifidelity Modeling Algorithm for System-Level Engineering Analysis

“…The mixed-fidelity algorithm for thermal radiation was implemented in the Entero software as part of a prototype environment for multifidelity, multiphysics environment for thermal analysis of systems containing electrical systems and exposed to fires [5,7]. The software allows the user considerable flexibility in creating and modifying system models, and in monitoring the temperatures in the components and the electrical activity in the embedded circuit as a simulation progresses.…”

“…The mixed-fidelity algorithm for thermal radiation was implemented in the Entero software as part of a prototype for multifidelity, multiphysics environments for thermal analysis of systems containing electrical circuits and exposed to fires [5,7].…”

“…A key design feature for the Entero code package is to allow the user to independently specify the level of fidelity for each module in the system [4,5,6,7]. This feature allows users to put higher fidelity models in the modules of interest, while using models of lower fidelity in the other modules.…”