ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
Latest Magazine Issues
Jul 2024
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Latest Journal Issues
Nuclear Science and Engineering
September 2024
Nuclear Technology
August 2024
Fusion Science and Technology
Latest News
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
YuGwon Jo, Nam Zin Cho
Nuclear Science and Engineering | Volume 182 | Number 2 | February 2016 | Pages 181-196
Technical Paper | doi.org/10.13182/NSE14-150
Articles are hosted by Taylor and Francis Online.
We present a new method for whole-core Monte Carlo calculation using space domain decomposition to alleviate the excessive memory requirement due to massive tallies. The proposed method is called the fission and surface source (FSS) iteration method; it is based on banking both the fission and surface sources for the next iteration to provide exact boundary conditions for nonoverlapping local problems. To accelerate source convergence during inactive iterations, the p-CMFD (partial current–based coarse-mesh finite difference) method is applied to adjust the weights of the fission and surface sources. While domain-based parallelization is easily implemented using the proposed FSS iteration method, the computing times for the local problems will be different, depending on specific local problems, which may cause idle times of the processors to wait for the results from other local problems. To reduce the idle times, we apply a source-splitting scheme to the FSS iteration method to level the expected numbers of the sources of local problems. The performance of the FSS iteration method is tested on two-dimensional, continuous-energy reactor problems, with encouraging results.