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Title: ASC Weekly News Notes

Abstract

Unified collision operator demonstrated for both radiation transport and PIC-DSMC. A side-by-side comparison between the DSMC method and the radiation transport method was conducted for photon attenuation in the atmosphere over 2 kilometers in physical distance with a reduction of photon density of six orders of magnitude. Both DSMC and traditional radiation transport agreed with theory to two digits. This indicates that PIC-DSMC operators can be unified with the radiation transport collision operators into a single code base and that physics kernels can remain unique to the actual collision pairs. This simulation example provides an initial validation of the unified collision theory approach that will later be implemented into EMPIRE.

Authors:
 [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1257613
Report Number(s):
SAND2016-4898R
640694
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; 54 ENVIRONMENTAL SCIENCES

Citation Formats

Womble, David E. ASC Weekly News Notes. United States: N. p., 2016. Web. doi:10.2172/1257613.
Womble, David E. ASC Weekly News Notes. United States. doi:10.2172/1257613.
Womble, David E. Sun . "ASC Weekly News Notes". United States. doi:10.2172/1257613. https://www.osti.gov/servlets/purl/1257613.
@article{osti_1257613,
title = {ASC Weekly News Notes},
author = {Womble, David E.},
abstractNote = {Unified collision operator demonstrated for both radiation transport and PIC-DSMC. A side-by-side comparison between the DSMC method and the radiation transport method was conducted for photon attenuation in the atmosphere over 2 kilometers in physical distance with a reduction of photon density of six orders of magnitude. Both DSMC and traditional radiation transport agreed with theory to two digits. This indicates that PIC-DSMC operators can be unified with the radiation transport collision operators into a single code base and that physics kernels can remain unique to the actual collision pairs. This simulation example provides an initial validation of the unified collision theory approach that will later be implemented into EMPIRE.},
doi = {10.2172/1257613},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {5}
}

Technical Report:

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