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Title: Adaptive mesh refinement for shocks and material interfaces

Abstract

There are three kinds of adaptive mesh refinement (AMR) in structured meshes. Block-based AMR sometimes over refines meshes. Cell-based AMR treats cells cell by cell and thus loses the advantage of the nature of structured meshes. Patch-based AMR is intended to combine advantages of block- and cell-based AMR, i.e., the nature of structured meshes and sharp regions of refinement. But, patch-based AMR has its own difficulties. For example, patch-based AMR typically cannot preserve symmetries of physics problems. In this paper, we will present an approach for a patch-based AMR for hydrodynamics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, management of patches, and load balance. The special features of this patch-based AMR include symmetry preserving, efficiency of refinement across shock fronts and material interfaces, special implementation of flux correction, and patch management in parallel computing environments. To demonstrate the capability of the AMR framework, we will show both two- and three-dimensional hydrodynamics simulations with many levels of refinement.

Authors:
 [1]
  1. Los Alamos National Laboratory
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
983229
Report Number(s):
LA-UR-10-00017; LA-UR-10-17
TRN: US201014%%426
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: High Performance Distributed Computing 2010 ; June 21, 2010 ; Chicago, IL
Country of Publication:
United States
Language:
English
Subject:
99; COMMUNICATIONS; EFFICIENCY; HYDRODYNAMICS; IMPLEMENTATION; MANAGEMENT; PERFORMANCE; PHYSICS; SYMMETRY

Citation Formats

Dai, William Wenlong. Adaptive mesh refinement for shocks and material interfaces. United States: N. p., 2010. Web.
Dai, William Wenlong. Adaptive mesh refinement for shocks and material interfaces. United States.
Dai, William Wenlong. Fri . "Adaptive mesh refinement for shocks and material interfaces". United States. https://www.osti.gov/servlets/purl/983229.
@article{osti_983229,
title = {Adaptive mesh refinement for shocks and material interfaces},
author = {Dai, William Wenlong},
abstractNote = {There are three kinds of adaptive mesh refinement (AMR) in structured meshes. Block-based AMR sometimes over refines meshes. Cell-based AMR treats cells cell by cell and thus loses the advantage of the nature of structured meshes. Patch-based AMR is intended to combine advantages of block- and cell-based AMR, i.e., the nature of structured meshes and sharp regions of refinement. But, patch-based AMR has its own difficulties. For example, patch-based AMR typically cannot preserve symmetries of physics problems. In this paper, we will present an approach for a patch-based AMR for hydrodynamics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, management of patches, and load balance. The special features of this patch-based AMR include symmetry preserving, efficiency of refinement across shock fronts and material interfaces, special implementation of flux correction, and patch management in parallel computing environments. To demonstrate the capability of the AMR framework, we will show both two- and three-dimensional hydrodynamics simulations with many levels of refinement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {1}
}

Conference:
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