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
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Y. T. Fung
Nuclear Science and Engineering | Volume 85 | Number 2 | October 1983 | Pages 178-187
Technical Paper | doi.org/10.13182/NSE83-A27425
Articles are hosted by Taylor and Francis Online.
Vibration characteristics are investigated for a cylindrical structure subject to turbulent parallel flows. Pressure fluctuations from external flows on the surface of the cylinder provide the lateral forces for oscillation motion. The fluctuating pressure in the turbulent boundary layer of the cylinder is assumed to be homogeneous. We propose a vibration mechanism involving a time scale, namely the azimuthal time delay resulting from the small-scale nonaxisymmetric perturbations to the pressure field. This mechanism is based on the propagation of pressure signals with the characteristic azimuthal time delay playing an important role in the degree of lateral force concentration, and therefore, in the flow-induced oscillation of the cylinder. In view of the proposed mechanism, the axisymmetric pressure perturbation results in a case of lateral force concentration in which the magnitudes of the resulting forcing function and of the vibration response are the maxima. These characteristics may serve as criteria to predict the upper bound on the vibration response of structures when asymmetric perturbations are present in turbulent parallel flows.