对不同温度和雷诺数下阳性离子表面活性剂十六烷基三甲基氯化铵（CTAC）溶液在循环回路中的传热特性进行了实验研究。在水中加入表面活性剂后溶液的传热特性明显降低，在不同的温度工况下均存在一个临界雷诺数，随着溶液温度的改变而发生变化。在不同的实验浓度条件下均存在一个临界温度，在临界温度以下时，临界雷诺数随温度升高而增加；在临界温度以上时，临界雷诺数随温度升高而急剧下降。分析该表面活性剂溶液阻力减小和传热性能降低之间的关系，提出了通过对溶液温度的控制来改变减阻流体传热特性的方法。
Experiments were conducted to study the heat transfer characteristics of a cationic surfactant solution, Cetyltrimethyl ammonium chloride （CTAC） in a closed loop system. It was found that the heat transfer perforraance is deteriorated by adding surfactant into water, and there exists a critical Reynolds number which changes with changing solution temperature. There exists a critical temperature at different solution concentrations. The critical Reynolds number increases with increasing solution temperature when the solution temperature is lower than the critical temperature; whereas it decreases rapidly when the solution temperature exceeds the critical temperature. A method of changing heat transfer performance of surfactant drag-reducing flow by controlling temperature was proposed through analyzing the relationship between drag reduction and heat transfer reduction of surfactant solution.
参考文献
| [1] | 王剑峰,魏进家,李凤臣,宇波.表面活性剂溶液的减阻和传热特性研究[J].工程热物理学报,2010(11):1859-1862. |
| [2] | Pei-Wen Li;Yasuo Kawaguchi;Akira Yabe .Transitional Heat Transfer and Turbulent Characteristics of Drag-reducing Flow Through a Contracted Channel[J].Journal of enhanced heat transfer: Theory and application in high performance heat and mass transfer,2001(1):23-40. |
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