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
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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!
Latest Magazine Issues
Apr 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Framatome signs contracts with Sizewell C
French nuclear developer Framatome is slated to deliver key equipment for Sizewell C Ltd.’s two large reactors planned for the United Kingdom’s Suffolk coast.
The agreement, reportedly worth multiple billions of euros, was announced this week and will involve Framatome from the design phase until commissioning. The company also agreed to a long-term fuel supply deal. Framatome is 80.5 percent owned by France’s EDF and 19.5 percent owned by Mitsubishi Heavy Industries.
Fahri Aglar, Ali Tanrikut
Nuclear Technology | Volume 161 | Number 3 | March 2008 | Pages 286-298
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT08-A3927
Articles are hosted by Taylor and Francis Online.
Passive safety systems utilized in most of the advanced nuclear reactors make use of the condensation phenomenon to cope with the design-basis accidents. The inhibiting effect of noncondensable gases on condensation is an extremely important phenomenon, and several experimental research studies have been performed in recent years. Moreover, some theoretical investigations, including assessment of system analysis codes and in this connection modeling of new correlations with a reasonable accuracy, also have been carried out. The experimental work conducted at the Middle East Technical University (METU) was undertaken to investigate the inhibiting effect of noncondensable gas on the condensation phenomenon. The constituted database covers the wide range of system parameters such as the mixture Reynolds number and the air mass fraction. In this study, a new heat transfer correlation is proposed defining condensation phenomenon in the presence of air and is modeled using the METU database. Both the mixture Reynolds number and the condensate Reynolds number are taken into consideration to simulate the possible effect of interfacial waviness. The suppression effect of air, which is accumulated at the condensate-mixture interface, on heat flux is considered by inclusion of air mass fraction. The mean deviation with respect to the experimental data is determined to be 19.4%. Furthermore, the correlation was tested on the RELAP5 code, and the accuracy is determined to be 20%. The overall performance of the correlation, as coded in the RELAP5 code, is satisfactorily good with respect to experimental data for local heat flux, heat transfer coefficient, air mass fraction, and wall subcooling degree. The results obtained by utilizing the correlation yielded much better results compared with the original RELAP5 model, namely Colburn-Hougen.