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。 Ma and other models were introduced into the model of Ma and so on, and the mathematical model describing the movement characteristics of pulsating heat pipe was built under the influence of the pressure imbalance between tubes. The simulation results show that the pulsating heat pipe can enter the stable period after a short period of less than 1 s. In the steady oscillation process, the filling rate, tube length and temperature difference between cold / hot section have significant influence on the movement and velocity of working fluid in the tube. This study helps to better understand the oscillatory motion characteristics and operating mechanism of a pulsating heat pipe.