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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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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Empowering the next generation: ANS’s newest book focuses on careers in nuclear energy
A new career guide for the nuclear energy industry is now available: The Nuclear Empowered Workforce by Earnestine Johnson. Drawing on more than 30 years of experience across 16 nuclear facilities, Johnson offers a practical, insightful look into some of the many career paths available in commercial nuclear power. To mark the release, Johnson sat down with Nuclear News for a wide-ranging conversation about her career, her motivation for writing the book, and her advice for the next generation of nuclear professionals.
When Johnson began her career at engineering services company Stone & Webster, she entered a field still reeling from the effects of the Three Mile Island incident in 1979, nearly 15 years earlier. Her hiring cohort was the first group of new engineering graduates the company had brought on since TMI, a reflection of the industry-wide pause in nuclear construction. Her first long-term assignment—at the Millstone site in Waterford, Conn., helping resolve design issues stemming from TMI—marked the beginning of a long and varied career that spanned positions across the country.
H. C. No, M. S. Kazimi
Nuclear Science and Engineering | Volume 89 | Number 3 | March 1985 | Pages 197-206
Technical Paper | doi.org/10.13182/NSE85-A17541
Articles are hosted by Taylor and Francis Online.
It is known that the typical six-equation two-fluid model of two-phase flow possesses complex characteristics, exhibits unbounded instabilities in the short-wavelength limit, and constitutes an ill-posed initial value problem. The conditions under which the virtual mass force term helps to overcome these difficulties were studied. Quantitative bounds on coefficients of the virtual mass terms were derived for mathematical hyperbolicity, numerical stability, and satisfaction of the second law of thermodynamics. One-dimensional numerical simulation showed that the suggested inequality for numerical stability predicts well the onset of instability. Also it was found that a growing instability may be possible if interfacial friction is not enough to stabilize the growing modes.
