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通过汽泡受力分析,构建窄缝通道内汽泡脱离直径预测模型。基于可视化实验获得的汽泡轴心倾斜角、前后接触角以及底部接触直径等数据,评价分析汽泡界面参数对脱离直径预测的影响,进而确定适用于本实验工况下窄缝通道内汽泡受力模型求解的界面输入参数,获得了窄缝通道汽泡脱离直径的预测值。利用竖直和倾斜条件下可视化实验获得的58个数据对汽泡脱离直径预测模型进行了验证,预测值和实验值符合较好。基于验证的汽泡脱离直径模型评估了各个力的地位和作用,应用分析了热工参数对汽泡脱离直径的影响。
Through the bubble force analysis, the model of bubble diameter prediction in narrow channel was established. Based on the data obtained from the visualization experiment, such as the inclination angle of the bubble center, the contact angle before and after the contact, and the contact diameter at the bottom, the influence of the parameters of the bubble interface on the prediction of the diameter of disengagement was evaluated and then the bubble suitable for the slit channel in this experiment The interface input parameters solved by the force model obtained the predicted value of the bubble diameter of narrow slit channel. Using the 58 data obtained from the visualization experiment under the vertical and inclined conditions, the bubble diameter prediction model was verified, and the predicted and experimental values were in good agreement. Based on the verified bubble departure diameter model, the position and function of each force were evaluated, and the influence of thermal parameters on bubble diameter was analyzed.