Numerical Analysis of Flow-Induced Vibration and Noise Generation in a Variable Cross-Section Channel
作者机构：Shandong Engineering Laboratory for High-Efficiency Energy Conservation and Energy Storage Technology&EquipmentSchool of Energy and Power EngineeringShandong UniversityJinan250061China School of Energy and Power EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan250301China Shandong Beinuo Cooling Equipment Co.Ltd.Dezhou253000China
出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)
年 卷 期：2023年第19卷第12期
页 面：2965-2980页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by the Key Research and Development Project of Shandong Province[2019GSF109084] the National Natural Science Foundation of China Young Scholars Program of Shandong University[2018WLJH73]
主 题：Variable cross-section flow channel noise modal analysis structure-borne noise
摘 要：Flow channels with a variable cross-section are important components of piping system and are widely used in variousfields of *** afinite element method and modal analysis theory,flow-induced noise,mode shapes,and structure-borne noise in such systems are investigated in this *** results demonstrate that the maximum displacement and equivalent stress are located in the part with variable cross-sectional *** aver-age excitation force on theflow channel wall increases with theflow *** maximum excitation force occurs in the range of 0–20 Hz,and then it decreases gradually in the range of 20–1000 ***,as theflow velocity rises from 1 to 3 m/s,the overall sound pressure level associated with theflow-induced noise grows from 49.37 to 66.37 ***,the overall sound pressure level associated with the structure-borne noise rises from 40.27 to 72.20 *** theflow velocity is increased,the increment of the structure-borne noise is higher than that of theflow-induced noise.
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