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| 1 | 气液旋流器内液滴破碎和碰撞的数值模拟显示文摘气液旋流分离器内是一个复杂的强旋湍流场,流场内的液滴受气动力、剪切力和湍流脉动的作用,发生剧烈的相互碰撞、聚合、破碎并撞击筒壁。对旋流器内液滴间的碰撞、聚合、液滴的破碎和碰壁的机制进行分析,在前人研究的基础上,结合旋流器的实际情况,提出适用于气液旋流器强旋气相湍流场内液滴间碰撞、液滴破碎和碰壁过程的计算模型,对新的数学模型进行数值模拟计算。结果表明,本模型能较为准确地预测强旋气相湍流场内液滴间碰撞、液滴破碎和碰壁过程,完善了气液旋流器的分离机制模型,为改善其分离性能及其工程设计提供了理论基础。 | 金向红 金有海 王建军 | 2010 | 中国石油大学学报(自然科学版)2010，34，5： | 12 |
| 2 | 液滴倾斜撞击液膜液冠演化规律显示文摘采用可调节表面张力的大密度比格子玻尔兹曼伪势模型模拟了液滴倾斜撞击液膜的过程,分析了不同雷诺数、韦伯数、液膜厚度和碰撞角对液冠演化的影响。结果表明:碰撞时能量损失随着雷诺数增大而减小,但随着液膜厚度增大而增大;上下游液冠高度均随着雷诺数、韦伯数和碰撞角的增大而增大;同时上下游液冠高度随着液膜厚度的变化呈现先增大后减小的趋势,液膜厚度为0.25倍液滴半径时达到最大值。液冠延伸长度同样随着雷诺数和碰撞角增大而增大,但并不随着韦伯数的增大而变化,同时液冠延伸长度随着液膜厚度增加而减小。 | 郭平措 何小泷 袁浩 | 2021 | 长江科学院院报2021，38，11： | 1 |
| 3 | Influence of the Spread/Splash Transition Criteria in the Spray Impingement Modeling显示文摘 | Andre Silva Jorge Barata Christian Rodrigues | 2013 | Journal of Energy and Power Engineering2013，7，2： | 0 |
| 4 | 不同液膜厚度条件下液滴/液膜碰撞特性显示文摘为获得不同液膜厚度条件下液滴/液膜碰撞特性,开展了大量的液滴/液膜碰撞试验,分析了液膜厚度对液滴/液膜碰撞形态的影响,构建了考虑液膜厚度影响的液滴/液膜碰撞形态辨识准则,确定了液滴/液膜碰撞产生的二次液滴数量与碰撞工况条件间的无量纲关系。研究结果表明:在碰撞初始阶段,液滴/液膜碰撞形态与液膜厚度无关,液滴顶部速度与入射速度一致,而空腔底部扩展速度约为液滴入射速度的0.4倍;随着碰撞时间的继续,液膜厚度对液滴/液膜碰撞形态有较大影响,液膜厚度越小,越不利于二次液滴和中心射流的产生,空腔深度扩展速度呈现出随无量纲液膜厚度减小而下降的趋势;当飞溅参数KCossali大于1 500+1 000×δ-0.8时,液滴/液膜的碰撞形态为溅射,给出了发生飞溅后产生的二次液滴数量的计算公式。 | 方龙 张云峰 陈博 随亚光 | 2023 | 现代应用物理2023，14，4： | 0 |
| 5 | Modeling of kinetic characteristics of alkaline-surfactant-polymer-strengthened foams decay under ultrasonic standing wave显示文摘Foaming issues are encountered at the stages in crude oil production, transportation, processing, especially in chemical flooding enhanced oil recovery(EOR) oilfields. These accumulated foams would cause a lot of trouble for downstream operation. The destruction of foams under ultrasonic has been increasingly paying attention in the background of green oilfield development. This study focuses on the decay kinetic characteristics of alkaline-surfactant-polymer-strengthened foams under the ultrasonic standing wave.The performance of the diverse foams was characterized. A decay kinetic model incorporating the energy correlation was developed and validated. The factors that affect the decay kinetic characteristics were discussed. The results indicated that the collapse rate and the collapse volume fraction decreased when the foam size decreased, the gas-liquid ratio decreased and the surface tension increased. Ultrasonic standing wave parameters have a significant impact on the decay behavior of the foam. Both the ultrasonic frequency and ultrasonic amplitude were increased by 50%, the collapse volume fraction of foams increased by about 1.25 times in the identical irradiation time. The relative deviation between the measured results and the model prediction was less than 10%. The potential collapse mechanism was also explained using the principle of energy correlation of foam surface. This study is not only beneficial to provide a robust and rigorous way to defoam of produced liquid in the alkaline/surfactant/polymer(ASP)flooding EOR process but also meaningful to well understand the decay process of oil-based foams. | Zhi-Hua Wang Xiao-Yu Liu Hong-Qi Zhang Yong Wang Yun-Fei Xu Bao-Liang Peng Yang Liu | 2022 | Petroleum Science2022，19，4： | 0 |
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