@Article{fdmp.2023.029292,
AUTHOR = {Youhao Wang, Chuntian Zhe, Chang Guo, Jinpeng Li, Jinheng Li, Shen Cheng, Zitian Wu, Suoying He, Ming Gao},
TITLE = {Numerical Analysis of Flow-Induced Vibration and Noise Generation in a Variable Cross-Section Channel},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {19},
YEAR = {2023},
NUMBER = {12},
PAGES = {2965--2980},
URL = {http://www.techscience.com/fdmp/v19n12/54400},
ISSN = {1555-2578},
ABSTRACT = {Flow channels with a variable cross-section are important components of piping system and are widely used in
various fields of engineering. Using a finite element method and modal analysis theory, flow-induced noise, mode
shapes, and structure-borne noise in such systems are investigated in this study. The results demonstrate that the
maximum displacement and equivalent stress are located in the part with variable cross-sectional area. The average excitation force on the flow channel wall increases with the flow velocity. The maximum excitation force
occurs in the range of 0–20 Hz, and then it decreases gradually in the range of 20–1000 Hz. Additionally, as
the flow velocity rises from 1 to 3 m/s, the overall sound pressure level associated with the flow-induced noise
grows from 49.37 to 66.37 dB. Similarly, the overall sound pressure level associated with the structure-borne noise
rises from 40.27 to 72.20 dB. When the flow velocity is increased, the increment of the structure-borne noise is
higher than that of the flow-induced noise.},
DOI = {10.32604/fdmp.2023.029292}
}