There exists a general need to compare radiative fluxes from experimental radiometers with fluxes computed in Thermal/Fluid simulations. Unfortunately, typical numerical simulation suites lack the ability to predict fluxes to objects with small view angles thus preventing validation of simulation results. A new model has been developed that allows users to specify arbitrary view angles, orientations, and locations of multiple radiometers, and receive as the output, high-accuracy radiative fluxes to these radiometers. This virtual radiometer model incorporates a reverse monte-carlo ray tracing algorithm adapted to meet these user specifications and runs on both unstructured and structured meshes. Verification testing of the model demonstrated the expected order of convergence. Validation testing showed good agreement between calculated fluxes from the model and measured fluxes from radiometers used in propellant fires. Sandia National Laboratories is a multiprogram laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DEAC0494AL85000.
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ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
July 8–12, 2012
Rio Grande, Puerto Rico, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4478-6
PROCEEDINGS PAPER
A New Model for Virtual Radiometers
Isaac L. Hunsaker,
Isaac L. Hunsaker
University of Utah, Salt Lake City, UT
Sandia National Laboratories, Albuquerque, NM
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David J. Glaze,
David J. Glaze
Sandia National Laboratories, Albuquerque, NM
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Jeremy N. Thornock,
Jeremy N. Thornock
University of Utah, Salt Lake City, UT
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Philip J. Smith
Philip J. Smith
University of Utah, Salt Lake City, UT
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Isaac L. Hunsaker
University of Utah, Salt Lake City, UT
Sandia National Laboratories, Albuquerque, NM
David J. Glaze
Sandia National Laboratories, Albuquerque, NM
Jeremy N. Thornock
University of Utah, Salt Lake City, UT
Philip J. Smith
University of Utah, Salt Lake City, UT
Paper No:
HT2012-58093, pp. 927-936; 10 pages
Published Online:
July 24, 2013
Citation
Hunsaker, IL, Glaze, DJ, Thornock, JN, & Smith, PJ. "A New Model for Virtual Radiometers." Proceedings of the ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 2: Heat Transfer Enhancement for Practical Applications; Fire and Combustion; Multi-Phase Systems; Heat Transfer in Electronic Equipment; Low Temperature Heat Transfer; Computational Heat Transfer. Rio Grande, Puerto Rico, USA. July 8–12, 2012. pp. 927-936. ASME. https://doi.org/10.1115/HT2012-58093
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