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Title: Final report on LDRD project : coupling strategies for multi-physics applications.

Abstract

Many current and future modeling applications at Sandia including ASC milestones will critically depend on the simultaneous solution of vastly different physical phenomena. Issues due to code coupling are often not addressed, understood, or even recognized. The objectives of the LDRD has been both in theory and in code development. We will show that we have provided a fundamental analysis of coupling, i.e., when strong coupling vs. a successive substitution strategy is needed. We have enabled the implementation of tighter coupling strategies through additions to the NOX and Sierra code suites to make coupling strategies available now. We have leveraged existing functionality to do this. Specifically, we have built into NOX the capability to handle fully coupled simulations from multiple codes, and we have also built into NOX the capability to handle Jacobi Free Newton Krylov simulations that link multiple applications. We show how this capability may be accessed from within the Sierra Framework as well as from outside of Sierra. The critical impact from this LDRD is that we have shown how and have delivered strategies for enabling strong Newton-based coupling while respecting the modularity of existing codes. This will facilitate the use of these codes in a coupledmore » manner to solve multi-physic applications.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1029797
Report Number(s):
SAND2007-7146
TRN: US201201%%207
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; IMPLEMENTATION; SIMULATION; PHYSICS

Citation Formats

Hopkins, Matthew Morgan, Moffat, Harry K, Carnes, Brian, Hooper, Russell Warren, and Pawlowski, Roger P. Final report on LDRD project : coupling strategies for multi-physics applications.. United States: N. p., 2007. Web. doi:10.2172/1029797.
Hopkins, Matthew Morgan, Moffat, Harry K, Carnes, Brian, Hooper, Russell Warren, & Pawlowski, Roger P. Final report on LDRD project : coupling strategies for multi-physics applications.. United States. https://doi.org/10.2172/1029797
Hopkins, Matthew Morgan, Moffat, Harry K, Carnes, Brian, Hooper, Russell Warren, and Pawlowski, Roger P. 2007. "Final report on LDRD project : coupling strategies for multi-physics applications.". United States. https://doi.org/10.2172/1029797. https://www.osti.gov/servlets/purl/1029797.
@article{osti_1029797,
title = {Final report on LDRD project : coupling strategies for multi-physics applications.},
author = {Hopkins, Matthew Morgan and Moffat, Harry K and Carnes, Brian and Hooper, Russell Warren and Pawlowski, Roger P},
abstractNote = {Many current and future modeling applications at Sandia including ASC milestones will critically depend on the simultaneous solution of vastly different physical phenomena. Issues due to code coupling are often not addressed, understood, or even recognized. The objectives of the LDRD has been both in theory and in code development. We will show that we have provided a fundamental analysis of coupling, i.e., when strong coupling vs. a successive substitution strategy is needed. We have enabled the implementation of tighter coupling strategies through additions to the NOX and Sierra code suites to make coupling strategies available now. We have leveraged existing functionality to do this. Specifically, we have built into NOX the capability to handle fully coupled simulations from multiple codes, and we have also built into NOX the capability to handle Jacobi Free Newton Krylov simulations that link multiple applications. We show how this capability may be accessed from within the Sierra Framework as well as from outside of Sierra. The critical impact from this LDRD is that we have shown how and have delivered strategies for enabling strong Newton-based coupling while respecting the modularity of existing codes. This will facilitate the use of these codes in a coupled manner to solve multi-physic applications.},
doi = {10.2172/1029797},
url = {https://www.osti.gov/biblio/1029797}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Nov 01 00:00:00 EDT 2007},
month = {Thu Nov 01 00:00:00 EDT 2007}
}