Measurements of fluid fluctuations around an oscillating nuclear fuel assembly |
| |
| Institution: | 1. Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, USA;2. Nuclear Engineering Program, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA;1. Nuclear Engineering Program, Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, OH 43210, United States;2. Nuclear Engineering Program, Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, United States;1. Aix Marseille Univ, CNRS, Centrale Marseille, LMA, Marseille, France;2. CEA Cadarache DEN/DTN/STCP/LHC, 13108 Saint-Paul-Lez-Durance Cedex, France;1. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China;2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041, China;1. Evaluation and Measurement, Kent State University, United States;2. Speech Pathology and Audiology, Kent State University, United States;3. Communication Disorders, Minot State University, United States |
| |
| Abstract: | In this paper, dynamic measurements of fluid velocity in the by-passes of a test-section representing a nuclear fuel assembly are presented. The test-section was designed to identify stiffness, damping and mass coefficients of a fuel assembly under axial flow, and previous studies have shown that the by-passes have an influence on the identified coefficients. The results presented in this paper show that the motion of the fuel assembly induces fluctuations in the axial fluid velocity in the by-passes. These fluctuations depend on the excitation frequency and position. A delay has been observed between the fuel assembly displacement and the fluid velocity fluctuations. The delay decreases when the axial velocity increases which means that it is a convection driven phenomenon. |
| |
| Keywords: | Fuel assembly Dynamic flow measurements Fluid–structure interaction |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
