水平与微倾斜管内气液两相流长气泡形状实验和模型研究

摘要

The shape of long bubbles in horizontal and near horizontal two-phase slug flows was experimentally and theoretically studied,during which,the long bubbles were acquired by injecting isolated bubbles into the pipe of two different inner diameters,and their shape parameters were measured using parallel wire probes.Subsequently,a one-dimensional model was established to predict the shape of long bubbles,and the prediction results were compared with actual measurements.Results show that the shape of long bubbles depends on the liquid velocity,bubble length and the tube inclination.The prediction results obtained with the theoretical model agree well with actual measurements.%针对水平管和倾斜管内气液两相段塞流的长气泡形状进行了实验和理论研究,实验中长气泡形状通过在管道中注入单气泡的方式获得,并利用双平行探针技术获得了2种不同管道内径条件下的长气泡形状数据.建立了可预测长气泡形状的一维理论模型,并将模型预测结果与实验结果进行了比较.结果表明:气泡形状取决于液体流速、气泡长度和管道倾角;所建立的理论模型对长气泡形状的预测结果与实验结果吻合良好.