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Title: Simulations of high yield air bursts using gray and multigroup diffusion; Comparison of Raptor and Lasnex

Abstract

No abstract prepared.

Authors:
;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
898467
Report Number(s):
UCRL-PROC-227008
TRN: US200706%%74
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: Nuclear Explosives Code Developers Conference, Los Alamos, NM, United States, Oct 22 - Oct 27, 2006
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; AIR; DIFFUSION; NUCLEAR EXPLOSIVES

Citation Formats

Shestakov, A, and Nilsen, V. Simulations of high yield air bursts using gray and multigroup diffusion; Comparison of Raptor and Lasnex. United States: N. p., 2006. Web.
Shestakov, A, & Nilsen, V. Simulations of high yield air bursts using gray and multigroup diffusion; Comparison of Raptor and Lasnex. United States.
Shestakov, A, and Nilsen, V. Thu . "Simulations of high yield air bursts using gray and multigroup diffusion; Comparison of Raptor and Lasnex". United States. doi:. https://www.osti.gov/servlets/purl/898467.
@article{osti_898467,
title = {Simulations of high yield air bursts using gray and multigroup diffusion; Comparison of Raptor and Lasnex},
author = {Shestakov, A and Nilsen, V},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Dec 21 00:00:00 EST 2006},
month = {Thu Dec 21 00:00:00 EST 2006}
}

Conference:
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  • Three finite elements of nodal type are introduced which hopefully lead to convergence of O(h{sup 3}) in L{sup 2} norm. Two of these methods are new and achieve the same orders of convergence with less parameters. They are applied to the one-group diffusion equation under different formulations, namely several versions (without or with reduced integration and transverse integration) of the primal one and the mixed-hybrid one, and convergence rates are checked for a model problem exhibiting an analytical solution. These methods are finally applied to more realistic multigroup situations.
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  • Abstract not provided.