TY - JOUR
T1 - Fluid-structural interaction in a slip joint of a jet pump assembly of a BWR-5
AU - Castro, Juan Cruz
AU - Grijalba, Yunuén López
AU - Gómez, Luis Héctor Hernández
AU - Sánchez, Israel Abraham Alarcón
AU - López, Pablo Ruiz
AU - Fernández, Juan Alfonso Beltrán
N1 - Publisher Copyright:
© 2020 Trans Tech Publications Ltd, Switzerland.
PY - 2020
Y1 - 2020
N2 - Flow-induced vibrations occur in some of the internal components of a nuclear reactor. When specific conditions are present, these vibrations may result in excessive deformations or fatigue that can generate mechanical damage. Several boiling water reactor (BWR) of nuclear power plants (NPP) have experienced failures in the jet pump assembly due to flow-induced vibration (FIV) which could be caused by acoustic pulsations derived from recirculation pumps, vibration induced by turbulence and vibration induced by leakage at the slip joint. The purpose of this paper is to establish a viable numerical methodology to evaluate the fluidstructural interaction at the slip joint of a jet pump. In this analysis, the fluid-structural interaction was evaluated with the finite element method and finite volume method with ANSYS® code in the case of two steel plates with a divergent gap. Results show that a critical velocity could cause fluidelastic instability, if only one flow in a two-way fluid-structural interaction was considered. This is one of the phenomena that could take place at the slip joint of a jet pump assembly.
AB - Flow-induced vibrations occur in some of the internal components of a nuclear reactor. When specific conditions are present, these vibrations may result in excessive deformations or fatigue that can generate mechanical damage. Several boiling water reactor (BWR) of nuclear power plants (NPP) have experienced failures in the jet pump assembly due to flow-induced vibration (FIV) which could be caused by acoustic pulsations derived from recirculation pumps, vibration induced by turbulence and vibration induced by leakage at the slip joint. The purpose of this paper is to establish a viable numerical methodology to evaluate the fluidstructural interaction at the slip joint of a jet pump. In this analysis, the fluid-structural interaction was evaluated with the finite element method and finite volume method with ANSYS® code in the case of two steel plates with a divergent gap. Results show that a critical velocity could cause fluidelastic instability, if only one flow in a two-way fluid-structural interaction was considered. This is one of the phenomena that could take place at the slip joint of a jet pump assembly.
KW - Computational structural dynamics (CSD)
KW - Critical velocity
KW - Dynamic mesh
KW - Flow-induced vibration (FIV)
KW - Fluidelastic instability
KW - System coupling
UR - http://www.scopus.com/inward/record.url?scp=85081090023&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/DDF.399.105
DO - 10.4028/www.scientific.net/DDF.399.105
M3 - Artículo
AN - SCOPUS:85081090023
SN - 1012-0386
VL - 399
SP - 105
EP - 114
JO - Defect and Diffusion Forum
JF - Defect and Diffusion Forum
ER -