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Title: Ray Effect Mitigation Through Reference Frame Rotation

Abstract

The discrete ordinates method is a popular and versatile technique for solving the radiative transport equation, a major drawback of which is the presence of ray effects. Mitigation of ray effects can yield significantly more accurate results and enhanced numerical stability for combined mode codes. Moreover, when ray effects are present, the solution is seen to be highly dependent upon the relative orientation of the geometry and the global reference frame. It is an undesirable property. A novel ray effect mitigation technique of averaging the computed solution for various reference frame orientations is proposed.

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:
1257789
Report Number(s):
SAND2016-4852J
Journal ID: ISSN 0022-1481; 640657
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Heat Transfer
Additional Journal Information:
Journal Volume: 138; Journal Issue: 11; Journal ID: ISSN 0022-1481
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Tencer, John. Ray Effect Mitigation Through Reference Frame Rotation. United States: N. p., 2016. Web. doi:10.1115/1.4033699.
Tencer, John. Ray Effect Mitigation Through Reference Frame Rotation. United States. doi:10.1115/1.4033699.
Tencer, John. Sun . "Ray Effect Mitigation Through Reference Frame Rotation". United States. doi:10.1115/1.4033699. https://www.osti.gov/servlets/purl/1257789.
@article{osti_1257789,
title = {Ray Effect Mitigation Through Reference Frame Rotation},
author = {Tencer, John},
abstractNote = {The discrete ordinates method is a popular and versatile technique for solving the radiative transport equation, a major drawback of which is the presence of ray effects. Mitigation of ray effects can yield significantly more accurate results and enhanced numerical stability for combined mode codes. Moreover, when ray effects are present, the solution is seen to be highly dependent upon the relative orientation of the geometry and the global reference frame. It is an undesirable property. A novel ray effect mitigation technique of averaging the computed solution for various reference frame orientations is proposed.},
doi = {10.1115/1.4033699},
journal = {Journal of Heat Transfer},
number = 11,
volume = 138,
place = {United States},
year = {2016},
month = {5}
}

Journal Article:
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