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.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Aug 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
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.