流体脉动对新型弹性管束传热特性影响的实验研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (10) : 59-63.

论文

流体脉动对新型弹性管束传热特性影响的实验研究

姜波1 ，郝卫东1，刘福国1，田茂诚2

作者信息 +

Experimental research on effects of fluid pulsation on heat transfer characteristics of the new type elastic tube bundle

JIANG Bo1， HAO Wei-dong1， LIU Fu-guo1， TIAN Mao-cheng2

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文章历史 +

摘要

建立了恒热流传热实验台，对新型弹性管束管外传热特性进行实验研究，得到了不同Re数下弹性管束的整体及局部换热性能。设计了电机驱动流体脉动装置，得到了不同脉动参数下弹性管束的传热及阻力特性，并拟合得到了各工况下的实验准则关联式。实验结果表明，在文中讨论参数范围内弹性管束的管外平均表面传热系数可以达到固定管束的3倍以上，强化传热效果显著，且中间两根弹性管的表面传热系数要明显高于边缘两管。通过对比不同实验工况可以得出当流体脉动频率为15Hz时弹性管束的PEC值最高，综合换热性能最好。

Abstract

Experimental research is performed on the heat transfer characteristics outside the new-type elastic-tube-bundle under constant heat flux. Both overall and local heat transfer performances of the elastic-tube-bundle are obtained under different Re numbers. Then, based on the self-designed motor-driven fluid-pulsation-generating device, the heat transfer and flow resistance characteristics of the elastic-tube-bundle are studied under different pulsation conditions. The results are fitted into experimental correlations. It is concluded that the average surface heat transfer coefficient outside the elastic-tube-bundle is more than 3 times larger than that outside the fixed-tube-bundle within the parameter range considered. The two elastic tubes in the middle perform much better than the two outside tubes. At pulsation frequency of 15Hz, the elastic-tube-bundle performs the best with the highest PEC value.

导出引用

姜波;郝卫东;刘福国;田茂诚 . 流体脉动对新型弹性管束传热特性影响的实验研究[J]. 振动与冲击, 2012, 31(10): 59-63

JIANG Bo;HAO Wei-dong;LIU Fu-guo;TIAN Mao-cheng. Experimental research on effects of fluid pulsation on heat transfer characteristics of the new type elastic tube bundle [J]. Journal of Vibration and Shock, 2012, 31(10): 59-63