MATHEMATICAL ANALYSIS OF TRANSVERSE VIBRATION OF CONICAL SPIRAL TUBE BUNDLE WITH EXTERNAL FLUID FLOW  

作　　者：YAN Ke GE Pei-qi SU Yan-cai BI Wen-bo 

机构地区：[1]Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, School ofMechanical Engineering, Shandong University, Jinan 250061, China

出　　处：《Journal of Hydrodynamics》2010年第6期816-822,共7页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Basic Research Program of China (973 Program,Grant Nos. 2007CB206900);supported by the Independent Innovation program of Shandong University (Grant No. 31360070613218)

摘　　要：The conical spiral tube bundle is a new type of heat transfer elements used to enhance heat transfer through flow-induced vibration. The effect of the external fluid flow on the transverse vibration of the conical spiral tube bundle is investigated with a mathematical method proposed in this article. Firstly, the natural vibration of the tube bundle is obtained by the hammering excitation method and the mode shapes of the transverse vibration are discussed. Then the effect of the external fluid flow on the transverse vibration of tube bundle is analyzed by a combination of experimental data, empirical correlations and FEM. The results show that in the frequency range from 0 Hz to 50 Hz, there exist six transverse vibrations. The external fluid flow has a significant effect on the frequency of the tube＇s transverse vibration, which are decreased by about 18% to 24% when the external fluid flow speed is 0.3 m/s.The conical spiral tube bundle is a new type of heat transfer elements used to enhance heat transfer through flow-induced vibration. The effect of the external fluid flow on the transverse vibration of the conical spiral tube bundle is investigated with a mathematical method proposed in this article. Firstly, the natural vibration of the tube bundle is obtained by the hammering excitation method and the mode shapes of the transverse vibration are discussed. Then the effect of the external fluid flow on the transverse vibration of tube bundle is analyzed by a combination of experimental data, empirical correlations and FEM. The results show that in the frequency range from 0 Hz to 50 Hz, there exist six transverse vibrations. The external fluid flow has a significant effect on the frequency of the tube＇s transverse vibration, which are decreased by about 18% to 24% when the external fluid flow speed is 0.3 m/s.

关 键 词：conical spiral tube bundle mathematical model vibration characteristic FEM 

分 类 号：O35[理学—流体力学] O327[理学—力学]