摘要
建立了污垢特性实验台,对恒热流条件下静止与振动圆管表面的结垢过程进行了实验,得到了不同工况下污垢热阻随时间的变化过程。实验结果表明,静止与振动条件下污垢热阻随时间变化曲线均为典型的渐近线型,渐近污垢热阻随着振动雷诺数的增加而呈指数型减小,相同工况下圆管振动时管外表面的渐近污垢热阻较静止时小,且振动污垢热阻随振动频率、振幅的升高而显著降低。
The experiment platform was of the round tube fouling was established. The fouling growth characteristics of the still and vibrational pipes under the condition of constant heat flux were experimentally studied, and the time-dependent curves of fouling resistance under different conditions were obtained. Experimental results showed that the fouling growth curve was representative asymptote, and the asymptotic fouling resistance declined with an increasing vibrational Reynolds number in exponential form, and the vibrational asymptotic fouling resistance was less than the stillness asymptotic fouling resistance under the same conditions. Vibration fouling resistance is significantly reduced while the frequency and amplitude increase.
出处
《山东大学学报（工学版）》
CAS
北大核心
2012年第2期97-101,共5页
Journal of Shandong University（Engineering Science）
基金
国家重点基础研究发展计划资助项目(2007CB206903)
关键词
振动
污垢
热阻
实验
圆管
雷诺数
频率
振幅
vibration
fouling
thermal resistance
experiment
round tube
Reynolds number
frequency
amplitude
