Flow-Induced Acoustics in Corrugated Pipes

作     者：Mihaela Popescu Stein Tore Johansen Wei Shyy 

作者机构：Department of Process TechnologyFlow TechnologySINTEF Materials and Chemistry7046 TrondheimNorway Department of Aerospace EngineeringUniversity of MichiganAnn ArborMI 48109USA 

出 版 物：《Communications in Computational Physics》 (计算物理通讯（英文）)

年 卷 期：2011年第10卷第6期

页      面：120-139页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Norwegian Research Council 

主　　题：Computational fluid dynamics aeroacoustics sound generation riser corrugated pipes wave propagation low Mach number gas flow flow-induced vibrations 

摘      要：When gas flows through corrugated pipes,pressure waves interacting with vortex shedding can produce distinct tonal noise and structural *** on established observations,a model is proposed which couples an acoustic pipe and selfexcited oscillations with vortex shedding over the corrugation *** the model,the acoustic response of the corrugated pipe is simulated by connecting the lossless medium moving with a constant velocity with a source based on a discrete distribution of van der Pol oscillators arranged along the *** time accurate solutions exhibit dynamic behavior consistent with that experimentally observed,including the lock-in frequency of vortex shedding,standing waves and the onset fluid velocity capable of generating the lock-in.