中文摘要：

将汽、液塞工质接触角滞后毛细阻力引入Ma等的模型中,并在考虑管间压力不平衡影响下建立了描述脉动热管工质运动特性的数学模型。模拟结果发现,脉动热管启动后在小于1 s的短时间内即可进入稳定周期振荡阶段。在稳定振荡过程中,充液率、管长和冷/热段温差对管内工质运动位移及速度影响显著。本研究有助于更好地理解脉动热管振荡运动特性和运行机理。

英文摘要：

According to the model proposed by Ma et ah [8], a new mathematical model for predicting the fluid movement characteristics in pulsating heat pipes （PHPs） was developed considering the contact angle hysteresis. The interconnected-tube induced driving pressure has also been taken into account in the present model. Results show that a short period less than 1 s is available to attain the steady periodic oscillation in PHPs after the start-up. At the steady oscillation period, the filling ratio, tube length and temperature difference between the evaporator and the condenser have been found to significantly affect the amplitudes both of the slug displacement and velocity. This study conduces to the better understanding of oscillating characteristics and operating mechanism of PHP systems.