一种新的计算水平管与小角度倾斜管中段塞流持液率经验关系式 ,该关系式是混合物速度、液体粘度和倾斜管倾角的函数。该经验式是基于水平管流中 316个测试数据和倾斜管流中 10 7个数据点而提出的 ,倾斜管流倾角 (以水平面为准 )的变化范围为 - 10℃～ 9℃。根据现有的测试数据和其它方面的数据进行检验 ,结果表明新经验公式比现有计算水平和倾斜段塞流的模型具有较大的改进 A New Empirical Relationship Between Liquid Level of Slug in Calculating Horizontal Tube and Small Slant Inclined Tube as a Function of Mixture Speed, Liquid Viscosity and Inclined Tube Inclination. The empirical formula is based on 316 test data in horizontal pipe flow and 107 data points in inclined pipe flow. The variation of inclined pipe flow angle  (whichever is horizontal) is -10 ℃ ~ 9 ℃. Based on the existing test data and other data, the results show that the new empirical formula has a greater improvement than the existing models for calculating the horizontal and inclined slug flow