CAJ | 학술논문

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0.0485~0.7960,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。
고필료배상류액막중함유기포,기심중협대액적적정황,근거 Smith 적배상류액막동능여중간기심동능상등적가설,제출료일개개진적절면함기솔예측모형。실험결과표명,대우수평관공기-수량상류,재질량함기솔위0.0485~0.7960,Smith 모형대우분층류오차위29.2%,배상류오차위18.6%,이개진모형대우분층류예측오차10.89%,배상류오차위13.3%,대대제고료 Smith 모형적예측정도。
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.