中文摘要：

在P为3~8 MPa的压力范围内,以截面尺寸为50 mm×2 mm的矩形并联双通道为实验本体,开展静止条件和倾斜、起伏、摇摆等运动条件下的密度波流动不稳定性实验。在时域和频域内,分析运动条件对流动失稳现象的影响。通过对比静止条件下的实验结果,分析运动条件对流动不稳定边界的影响。最后基于实验数据,拟合了流动不稳定边界的经验关系式。

英文摘要：

An experiment has been made on the flow instability under station, inclination, fluctuation and rolling conditions in a 50 mm～2 mm parallel rectangular channel at the pressure of 3MPa-8MPa. First of all, the effects of motion conditions on phenomena of flow oscillation have been studied in time domain and frequency domain, Then, by comparing the results under station condition, the effects of motion conditions on flow instability boundary were obtained. Finally, an empirical correlation of instabilitv boundaries was correlated based on the exnerimental results.