cfd [computational fluid dynamics] and safety factors. computer modeling of complex processes needs old-fashioned experiments to stay in touch with reality.(684.25kb)推荐.pdf
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cfd [computational fluid dynamics] and safety factors. computer modeling of complex processes needs old-fashioned experiments to stay in touch with reality.(684.25kb)推荐
Contract No. and Disclaimer:
This manuscript has been authored by Savannah River Nuclear
Solutions, LLC under Contract No. D -AC09-08SR22470 with the U.S.
Department of Energy. The United States Government retains and the
publisher, by accepting this article for publication, acknowledges that
the United States Government retains a non-exclusive, paid-up,
irrevocable, worldwide license to publish or reproduce the published
form of this work, or allow others to do so, for United States
Government purposes.
CFD and Safety Factors
Computer modeling of complex processes needs old-fashioned experiments to stay in
touch with reality.
By Robert A. Leishear, PhD, P. E.
with Si Y. Lee, Mark D. Fowley, Michael R. Poirier, David B. Stefanko, Timothy J. Steeper, Billy
J. Giddings, William B. Van Pelt, Robert C. Ervin, and Keith D. Harp
Robert A. Leishear is a fellow engineer at Savannah River National Laboratory in Aiken,
S.C. He wrote a book for ASME Press on piping, fluids, dynamics, and failure analysis.
Co-authors were managers and researchers in the mixing study. Si Y. Lee, Mark D.
Fowley, Michael R. Poirier, David B. Stefanko, Timothy J. Steeper, and Billy J. Giddings
are with the Savannah River Lab. William B. Van Pelt, Robert C. Ervin, and Keith D.
Harp are with Savannah River Remediation LLC.
Computational fluid dynamics is recognized as a powerful engineering tool. That is, CFD
has advanced over the years to the point where it can now give us deep insight into the
analysis of very complex processes. There is a danger, though, that an engineer can place
too much confidence in a simulation. If a user is not careful, it is easy to believe that if
you plug in the numbers, the answer comes out, and you are done. This assumption can
lead to significant errors.
As we discovered in the course of a study on behalf of the Department of Energy’s
Savannah River Site in South Carolina, CFD models fail to capture some of the larg
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