A comprehensive comparison on vibration and heat transfer of two elastic heat transfer tube bundles
来源期刊：中南大学学报(英文版)2015年第1期
论文作者：YAN Ke(闫柯) GE Pei-qi(葛培琪) ZHAI Qiang(翟强)
文章页码：377 - 385
Key words：planar elastic tube bundle; conical spiral tube bundle; mode characteristics; heat transfer performance
Abstract: Elastic heat transfer tube bundles are widely used in the field of flow-induced vibration heat transfer enhancement. Two types of mainly used tube bundles, the planar elastic tube bundle and the conical spiral tube bundle were comprehensively compared in the condition of the same shell side diameter. The natural mode characteristics, the effect of fluid-structure interaction, the stress distribution, the comprehensive heat transfer performance and the secondary fluid flow of the two elastic tube bundles were all concluded and compared. The results show that the natural frequency and the critical velocity of vibration buckling of the planar elastic tube bundle are larger than those of the conical spiral tube bundle, while the stress distribution and the comprehensive heat transfer performance of the conical spiral tube bundle are relatively better.
YAN Ke(闫柯)1, GE Pei-qi(葛培琪)2, ZHAI Qiang(翟强)1
(1. Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System
(Xi’an Jiaotong University), Xi’an 710049, China;
2. School of Mechanical Engineering, Shandong University, Jinan 250061, China)
Abstract:Elastic heat transfer tube bundles are widely used in the field of flow-induced vibration heat transfer enhancement. Two types of mainly used tube bundles, the planar elastic tube bundle and the conical spiral tube bundle were comprehensively compared in the condition of the same shell side diameter. The natural mode characteristics, the effect of fluid-structure interaction, the stress distribution, the comprehensive heat transfer performance and the secondary fluid flow of the two elastic tube bundles were all concluded and compared. The results show that the natural frequency and the critical velocity of vibration buckling of the planar elastic tube bundle are larger than those of the conical spiral tube bundle, while the stress distribution and the comprehensive heat transfer performance of the conical spiral tube bundle are relatively better.
Key words:planar elastic tube bundle; conical spiral tube bundle; mode characteristics; heat transfer performance
