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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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On North Carolina's ratification of Senate Bill 266
I have been a North Carolinian for 62 years and involved in the state’s nuclear energy industry from my high school days to today. I have seen firsthand how North Carolina has flourished. This growth has been due to the state’s enterprising people and strong leaders. Clean, competitive, and always-on nuclear power has also played an important role.
Juliana P. Duarte, Michael L. Corradini
Nuclear Technology | Volume 201 | Number 1 | January 2018 | Pages 99-102
Technical Note | doi.org/10.1080/00295450.2017.1389594
Articles are hosted by Taylor and Francis Online.
Hydraulic and heated equivalent diameters are approximations to account for different flow geometries in thermal-hydraulic analyses. Most of the empirical models used in single- and two-phase flow heat transfer are based on experiments in heated tubes and extrapolated to complex geometries by means of the equivalent diameters. For heat transfer calculations, as a general rule, the heated equivalent diameter must be used for bundle geometries and the hydraulic equivalent diameter for annulus geometries. The use of both diameters in different correlations is discussed and clarified in this technical note.