Affiliation:
1. Shandong University at Weihai
2. Shandong University
Abstract
Elastic tube bundles are universally used in heat transfer enhancement via the flow-induced vibration in heat exchangers, and the study of the tube vibration characteristic is essential. The natural vibration of multiple conical spiral tube bundles was discussed in this paper based on numerical simulation. The substructures of ten conical spiral tubes, the inlet and the outlet branch were set up individually. Then the mass matrix and the stiffness matrix of these substructures were calculated. The general matrices were obtained and the vibration equation of the overall structure was founded. The results show that the natural frequencies of the multiple conical spiral tube bundles are smaller than the traditional planar elastic tube bundles and each natural vibration mode has a frequency band, which contains several natural frequencies.
Publisher
Trans Tech Publications, Ltd.
Reference10 articles.
1. L. Cheng: Principle and application of elastic tube heat exchanger (Publishing house of science, China 2001).
2. L. Cheng, T. Luan and W. J. Du: International Journal of Heat and Mass Transfer Vol. 52 (2009), p.1053.
3. L. Cheng, Y. Qiu: Journal of Hydrodynamics Vol. 15(2003), p.84.
4. J. Z. Zheng, L. Cheng and W. J. Du: Chinese Journal of Mechanical Engineering Vol. 43(2007), p.202.
5. J. Z. Zheng, L. Cheng and W. J. Du: Journal of Shandong University(Engineering Science) Vol. 37(2007), p.55.
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2 articles.
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