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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。
The heat transfer characteristics of cetyltrimethylammonium chloride (CTAC) solution with positive ion surfactant at different temperatures and Reynolds numbers in a circulation loop were studied. The heat transfer characteristics of the solution decreased obviously after the surfactant was added into the water. Under certain temperature conditions, there was a critical Reynolds number, which changed with the solution temperature. At different experimental concentrations, there is a critical temperature. Under the critical temperature, the critical Reynolds number increases with increasing temperature. Above the critical temperature, the critical Reynolds number decreases sharply with increasing temperature. The relationship between the decrease of the resistance of the surfactant solution and the decrease of the heat transfer performance was analyzed. The method of changing the heat transfer characteristics of the drag reducing fluid by controlling the temperature of the solution was proposed.