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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Gregory J. Van Tuyle, John C. Lee
Nuclear Science and Engineering | Volume 75 | Number 3 | September 1980 | Pages 225-242
Technical Paper | doi.org/10.13182/NSE80-A19055
Articles are hosted by Taylor and Francis Online.
A linearized formulation of the basic fluid conservation equations for describing the dynamic behavior of nuclear steam generators is presented. The model utilizes a movable boundary spatial discretization technique in one-dimensional geometry and is capable of representing the transient behavior of integral-economizer once-through steam generator (IEOTSG) units in the time and frequency domains. A generalized boundary treatment algorithm is developed to place and track boundaries between heat transfer regimes on the secondary side of a steam generator. An enthalpy transport model is incorporated in a manner consistent with the movable boundary formulation to reduce the nonphysical representation of the in-cell distribution of enthalpy with long axial regions and weighting functions. Results of transient calculations performed with the linearized model agree well with other computational results, as well as with the experimental data obtained at a 19-tube IEOTSG test facility.