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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (2): 403-407    DOI: 10.3785/j.issn.1008-973X.2010.02.035
一般工业技术     
单管传输特性的改进模型与实验研究
王波, 邱利民, 孙大明, 白昆, 刘钰
(浙江大学 制冷与低温研究所，浙江 杭州 310027)
Modified model for transmission characteristic of single tube and its experimental verification
WANG Bo, QIU Li-min, SUN Da-ming, BAI Kun, LIU Yu
(Institute of Refrigeration and Cryogenic Engineering, Zhejiang University, Hangzhou 310027, China)
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摘要：

为了描述单根圆形管道的传输特性,在流体网络理论的基础上,参考Rott的波动方程和Swift对紊流的修正方法,提出单管传输特性的改进模型.在模型中讨论了流动为紊流时的修正方法：当R/δv较小时,利用Swift的修正方法进行修正；当R/δv较大且修正因子n>1时,利用n对紊流进行进一步修正.为了对模型进行验证,以声压放大器这一典型的单管道为例开展了实验研究.紊流时在R/δv较小的情况下,改进模型和DeltaE的计算结果一致,与实验吻合良好；在R/δv较大的情况下,改进模型由于充分考虑了径向上的对流换热损失,其计算结果与DeltaE相比更加接近实验结果.
Abstract:

A modified model was proposed based on the fluid network theory, Rott’s wave equation, and Swift’s correction method for turbulence in order to describe the transmission characteristic of a single circular tube. The correction methods for turbulence were discussed. Swift’s correction method is used when R/δv is small, and further correction is made using factor n when R/δv is large and n>1. An acoustic amplifier was taken as example. The calculation results of the turbulence flow at small R/δv by the model and DeltaE agreed well with the experimental results. When the flow was turbulent at large R/δv, the results of the model were closer to the experimental results than DeltaE because the model considered convective heat transfer loss in radical direction.
出版日期: 2010-03-09
:  TB 68  
基金资助:

国家自然科学基金资助项目(E50825601)；教育部新世纪人才计划资助项目(NCET-06-0521).
通讯作者: 邱利民,男,教授.     E-mail: limin.qiu@zju.edu.cn
作者简介: 王波（1982—）,男,云南会泽人,博士生,从事热声发动机研究.
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引用本文:

王波, 邱利民, 孙大明, 等. 单管传输特性的改进模型与实验研究[J]. J4, 2010, 44(2): 403-407.

WANG Bei, QIU Li-Min, SUN Da-Meng, et al. Modified model for transmission characteristic of single tube and its experimental verification. J4, 2010, 44(2): 403-407.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.02.035    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I2/403

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