摘要
考虑了环状流液膜中含有气泡,气芯中夹带液滴的情况,根据Smith的环状流液膜动能与中间气芯动能相等的假设,提出了一个改进的截面含气率预测模型。实验结果表明,对于水平管空气-水两相流,在质量含气率为0.048 5~0.796 0,Smith模型对于分层流误差为29.2%,环状流误差为18.6%,而改进模型对于分层流预测误差10.89%,环状流误差为13.3%,大大提高了Smith模型的预测精度。
In consideration of the bubble in the film of annular flow and the droplet in the gas core, the previous model of Smith has been modified in order to predict the void fraction in horizontal pipes more accurately. During the gas quality range of 0.048 5~0.796 0, as to Smith model, the void fraction prediction error of stratified flow and annular flow was 29.2% and 18.6% respectively. On the contrary, as to stratified flow, the corresponding prediction error of the modified model was 10.89 % and in annular flow the prediction error was 13.3 ~. The experimental results showed that the prediction accuracy was improved greatly compared with Smith model.
出处
《石油化工高等学校学报》
CAS
2015年第4期86-90,共5页
Journal of Petrochemical Universities
基金
国家自然科学基金资助项目(51006123)
中央高校基本科研业务费专项基金项目(14CX05028A)
山东省优秀中青年科学家奖励基金(BS2011HZ024)
关键词
含气率
改进模型
水平管
气液两相流
Void fraction
Modified model
Horizontal pipe
Gas-liquid two-phase flow
