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基于SSG模型的旋转流场特性分析 被引量:1
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作者 李枫 付康 +2 位作者 齐甜甜 邢雷 刘彩玉 《化工机械》 CAS 2023年第1期32-39,75,共9页
以磁力搅拌器旋转产生的旋转流场为研究对象,运用雷诺应力输运模型——SSG模型对流场分布特性进行数值模拟。借助PIV、HSV技术对旋转流场切向速度和轴心气核形态开展研究。得出不同转速条件下旋转流场的切向速度和气核形态分布规律。将... 以磁力搅拌器旋转产生的旋转流场为研究对象,运用雷诺应力输运模型——SSG模型对流场分布特性进行数值模拟。借助PIV、HSV技术对旋转流场切向速度和轴心气核形态开展研究。得出不同转速条件下旋转流场的切向速度和气核形态分布规律。将数值模拟结果与实验结果进行对比,结果表明:当磁性转子转速为900 r/min时,中心处切向速度为0.161 m/s,边壁流体切向速度为0.028 m/s,随着转子转速增加至2100 r/min时,中心处切向速度为0.477 m/s,边壁流体切向速度为0.043 m/s,切向速度实验值和数值模拟值最大偏差为4.7%,数值上呈现出了较好的一致性。将数值模拟得出的不同转速条件下的气核分布形态与HSV实验所得结果进行对比,得出当磁性转子转速为900 r/min时,气核深度最大差值是2 mm,偏差为4.2%;转速为1440 r/min时,最小差值为0.3 mm,偏差为0.5%,具有较好的一致性。 展开更多
关键词 磁力搅拌器 旋转流场 SSG模型 切向速度分布 气核形态 PIV HSV
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Morphologies of Core-Shell-Cylinder-Forming ABC Star Triblock Copolymers in Nanopores 被引量:1
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作者 Wen-bo Jiang Wen-chang Lang +1 位作者 Shi-ben Li Xiang-hong Wang 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2014年第3期337-342,共6页
The self-assembly behavior of ABC star triblock copolymers can lead to a large number of nanostructures. Indeed, many new and interesting structures have already been discovered and proven to be hotspot in soft matter... The self-assembly behavior of ABC star triblock copolymers can lead to a large number of nanostructures. Indeed, many new and interesting structures have already been discovered and proven to be hotspot in soft matter physics research. In this work, we introduce different phase diagrams of core-shell-cylinder-forming ABC star triblock copolymers under different conditions, including in-bulk and pore geometries with different sizes. The relation between the pore size geometries and their corresponding structures are also revealed. The different properties of the surface potential field that significantly affect the self-assembly process of ABC star triblock copolymers are investigated as well. 展开更多
关键词 Nanopore ABC star triblock copolymer Core-shell-cylinder-forming
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