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| 1 | Investigation of the hydrodynamics of slug flow in airlift pumps显示文摘A slug flow model considering the dispersed bubbles entrained from the tail of Taylor bubble(TB) and recoalesced with the successive TB was proposed. Experiment was conducted to test the validity of this model by using a high-speed camcorder and particle image velocimetry(PIV). It was found that the model was valid for predicting the characteristics of slug flow in airlift pump within average error of 14%. Moreover, large pipe diameter was found to accelerate the rise velocity of TB and decreases void fraction in liquid slug by a small margin. | Zhineng Wang Yong Kang Xiaochuan Wang Shijing Wu Xiaoyong Li | 2018 | Chinese Journal of Chemical Engineering2018，26，12： | 3 |
| 2 | 不同液体介质下小型气力提升泵水力特性分析显示文摘污水处理、深井采油、核能领域采用气力提升技术具有显著优势。为深入研究液体介质密度对气力提升泵性能的影响规律,本文基于Fluent软件采用欧拉模型、标准k-ε湍流模型数值模拟空气-水、空气-水银、空气-煤油三种小型气力提升泵内气液两相流动及其水力特性,并将空气-水气力提升泵的计算结果与其实验数据进行对比验证。研究结果表明:①提升管内总压降随充气量的增加而单调递减;相同气流量下,液体介质密度越大,提升管进出口压降越大;②气力提升泵提升液体流量随着气体注入流量的增大先快速增多,后增加缓慢;相同气流量下,液体介质密度越大,其提升液体流量越大;③随着气流量的增加,提升效率先增加后降低;相同气流量下,液体介质密度越大,其提升效率越大。本文研究成果将为污水处理、深井采油、核能领域的气力提升技术的应用提供坚实理论基础。 | 左娟莉 杨泓 魏炳乾 张凯 吴霜 | 2020 | 西安理工大学学报2020，36，3： | 2 |
| 3 | 气泡羽流气液两相流动特性的研究进展显示文摘气泡羽流是一种复杂的气液两相流,广泛应用于废水处理、石油加工、环保等工业领域。气泡羽流的流动特性对气液两相间质量、动量传递及工业应用至关重要。本工作总结了理论与实验研究等方面气泡羽流流动特性的研究进展。详细讨论了气泡羽流气液两相流体水力学特性、羽流运动行为的影响因素。根据气含率、气泡直径等水力学参数的预测模型和经验公式,归纳了不同液相物性和结构参数下羽流模型的适用范围,揭示了流动对传质的作用。总结了分层流体中气泡羽流流型变化规律、羽流去分层效果以及引起流型变化的影响因素。阐释了横向流动环境下羽流的偏移行为呈线性变化,该变化与横向流速及表观气速等因素有关。最后讨论了气泡羽流气液两相流动特性研究手段和理论方法的局限性,展望了气泡羽流运动规律多尺度研究的方向。 | 董鑫 刘易诺 叶陈 张建伟 冯颖 | 2023 | 过程工程学报2023，23，1： | 1 |
| 4 | 液体温度对空气-水气力提升系统性能影响数值模拟研究显示文摘为探究液体温度对气力提升系统提升性能的影响,基于Eulerian多相流模型和k-ω SST湍流模型,数值模拟研究了液体温度分别为20℃、60℃、90℃时空气-水气力提升系统的提升性能变化,并将数值模拟结果与实验数据对比,两者吻合较好。结果表明:同一充气量下液体提升流量随温度的升高而增大,提升流量随时间变化最终趋于周期性波动;在低充气量下温度对空泡份额影响较小,随着充气量的增大,温度越高,空泡份额越大;当充气量在2.5m^3/h附近时,气力提升系统的提升效率到达峰值,且温度越高,峰值越大。 | 左娟莉 杨泓 魏炳乾 王雯 张凯 | 2020 | 应用力学学报2020，37，4： | 0 |
| 5 | 作业工况及喷射方式对气举输出的影响显示文摘基于流体力学理论,从静力学角度,进行了气举管内压力分析,研究了不同作业工况及喷射方式对气举输出的影响,分析了气举输出特性随吸口下降深度的变化规律。结果表明,气举垂直作业存在固相与液相流量变化趋势相反的平衡段,吸口底部漏斗状坑径变大、局部流体加速、紊流增多,有利于固体颗粒的提升;对称喷射方式固相空隙率更高,提升固体颗粒性能更好,而非对称喷射方式明显增强了气举吸口附近的局部扰动,更有利于采矿作业过程中液体提升。 | 唐川林 庹磊 王霞光 胡东 王舒 夏美丽 | 2022 | 矿冶工程2022，42，2： | 0 |
| 6 | Characterizations of gas-liquid interface distribution and slug evolution in a vertical pipe显示文摘Large vertical pipes are key structures connecting subsea wells to offshore platforms.However,existing studies mainly focus on small vertical pipes.In a vertical acrylic pipe with 80 mm inner diameter and 11 m height,a high-speed camera was used to visually research the influences of pipe diameters,liquid properties and inlet effect on air-water co-flow characteristic.Different flow regime maps of vertical pipes(diameters are in the range of 50e189 mm)were compared and the critical gas velocity of the transition boundary from bubble to slug flow tended to increase with the increase of diameters at D≥80 mm.Drift-flux models were established in different flow regimes and liquid properties have a significant effect on drift coefficients of bubble flow and slug flow(void fraction a≤0.4).The influence of inlet turbulent effect on the gas-liquid interface distribution gradually weakened and disappeared from the pipe base to 85D,where the flow was fully developed.Slug frequency has a trend of increase first and then decrease with the gas Weber numbers increasing at low liquid superficial velocities(J_(L)≤0.31 m/s).And on the basis of this law,a new slug frequency correlation was proposed.It was found that there was an exponential relationship between the ratio of lengths of Taylor bubble to slug and the void fraction. | Hai-Yang Yu Qiang Xu Ye-Qi Cao Bo Huang Han-Xuan Wang Lie-Jin Guo | 2023 | Petroleum Science2023，20，5： | 0 |
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