文章摘要
姜羽,姜根山,于淼,杨延锋,孙建浩.声波作用下的单圆柱绕流及传热特性数值研究[J].声学技术,2021,40(3):308~315
声波作用下的单圆柱绕流及传热特性数值研究
Numerical study of flow and its heat transfer characteristics of a single cylinder under the action of acoustic waves
投稿时间:2021-01-21  修订日期:2021-03-24
DOI:10.16300/j.cnki.1000-3630.2021.03.002
中文关键词: 声波特性  圆柱绕流  漩涡脱落  强化传热
英文关键词: acoustic characteristics  flow around a cylinder  vortex shedding  enhanced heat transfer
基金项目:国家自然科学基金资助项目(12074118、11674093);河北省自然科学基金资助项目(A2019502160);声场声信息国家重点实验室项目(SKLA201808)。
作者单位E-mail
姜羽 华北电力大学数理学院, 河北保定 071003  
姜根山 华北电力大学数理学院, 河北保定 071003 gsjiang@ncepu.edu.cn 
于淼 华北电力大学能源动力与机械工程学院, 北京 102206  
杨延锋 华北电力大学能源动力与机械工程学院, 北京 102206  
孙建浩 华北电力大学能源动力与机械工程学院, 北京 102206  
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中文摘要:
      为了研究声波对单圆柱绕流流动和传热特性的影响,建立了流场、声场、对流传热多物理场耦合的二维数学模型,并利用有限元软件COMSOL进行数值模拟。结果表明:(1)当频率f=50 Hz、声压级LSP=123~149 dB时,斯特劳哈尔数Sr随声压级增大而减小,圆柱表面压力系数CP随声压级增大而增大;(2)LSP=143 dB、f=20~80 Hz时,斯特劳哈尔数Sr、压力系数CP均随频率f增大而增大;(3)对比f=50 Hz、LSP=143 dB声波作用与无声波作用的情况,阻力系数CDF和升力系数CDL都呈周期性变化,但有声波作用时振幅增大;(4)声波作用会促进圆柱表面热量传递,但当LSP>143 dB,圆柱表面局部努塞尔数Nuθ开始减小。该研究结果为强化圆柱绕流传热提供了理论研究基础。
英文摘要:
      In order to study the effect of sound waves on flow around a single cylinder and its heat transfer characteristics, a two-dimensional mathematical model of multi-physical coupling flow field, sound field, and convection heat transfer is established, and the finite element software COMSOL is used for numerical simulation. The results show: (1) when the frequency f =50 Hz and the sound pressure level LSP=123-149 dB, the Strouhal number Sr decreases and the cylindrical surface pressure coefficient CP increases as LSP increases; (2) When LSP=143 dB and f =20-80 Hz, both Sr and pressure coefficient CP increase with the increase of f; (3) Under the condition of having sound wave action (f =50 Hz and LSP=143 dB) or no sound wave action, the drag coefficient CDF and lift coefficient CDL all change periodically, but the amplitude under sound wave action increases; (4) The effect of acoustic waves can promote heat transfer on the cylindrical surface, but when LSP>143 dB, the local Nusselt number Nuθ on the cylindrical surface begins to decrease. The research results provide a theoretical research foundation for enhancing heat transfer around a cylinder.
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