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J. Michael Doster |
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Undergraduate Administrator
Associate Professor of Nuclear Engineering
office: 2107 Burlington Engineering Laboratories
phone: 919.515.3658
fax: 919.515.5115
e-mail: doster@ncsu.edu
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| education: |
B.S. (Nuclear Engineering) 1977, N.C. State University
Ph.D. (Nuclear Engineering) 1982, N.C. State University
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| research areas: |
I am interested in a variety of reactor and
reactor-related heat transfer and fluid flow problems.
These range from resolving uncertainties associated with
the basic equations and numerical techniques used
to describe multiphase flow systems to the use of
high fidelity systems simulations to develop advanced
control methods for current and next generation reactors. I
have been looking into a number of numerical stability
issues associated with the models and numerics typically
used to describe the thermal-hydraulic behavior of
nuclear reactor systems. This research has led to the
development of analytic stability bounds for the
numerical solution of two-phase flow problems in situations
where these bounds did not previously exist. Recent
research efforts have focused on the development of
methods that allow the direct control of steam generator
mass inventory as opposed to current technology that
relies on measurements of downcomer level. The approach
is to use detailed thermal hydraulic simulations to
calculate the time dependent relationship between
liquid mass inventory and transient indications of
indicated level, feedwater flow, steam flow and steam
pressure conditions. It was shown that artificial neural
networks could be developed that predict mass inventory
with sufficient fidelity to allow for the development of
control systems that control steam generator mass directly.
This approach effectively eliminates feedwater
control problems associated with shrink and swell phenomena.
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| publications: |
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