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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
Standards Program
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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Latest News
College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Sadia Khalid, Idrees Ahmad, Awais Zahur
Nuclear Technology | Volume 205 | Number 9 | September 2019 | Pages 1175-1184
Technical Paper | doi.org/10.1080/00295450.2019.1580530
Articles are hosted by Taylor and Francis Online.
The long-term, safe, and reliable operation of a reactor coolant pump is vital for the safety of a nuclear reactor. In the case of a station blackout or power failure to the pump, the inertia of rotating parts of the pump should provide sufficient pumping capacity or flow rate to remove decay heat to ensure the safety of the reactor. An accurate flow coastdown analysis is required for the design and manufacture of reactor coolant pumps. In this paper a mathematical model is formulated to study flow coastdown of CHASNUPP-2, which is a pressurized water reactor. Frictional losses in the pump are also incorporated in the model to get accurate results. Two important parameters of the model are inertia of the pump impeller and inertia of the coolant, which are related to each other in the form of effective energy ratio. The effective energy ratio is made variable in order to accurately model the flow coastdown transient. The model is solved numerically to get flow coastdown curves and the comparison of the theoretical and experimental results shows a good agreement between them.