T型微通道内液滴形成过程及长度的实验研究
张井志,陈武铠,周乃香,雷丽,梁福顺

Experiment study on formation and length of droplets in T-junction microchannels
Jing-zhi ZHANG,Wu-kai CHEN,Nai-xiang ZHOU,Li LEI,Fu-shun LIANG
表 1 液滴、液柱长度预测公式
Tab.1 Empirical correlations for droplet and liquid slug length
文献 通道结构 连续相 离散相 关联式 MAD/% MADmax/% MRD/%
Xu等[20] 侧T型W=0.2 mm 水+SDS 正辛烷 ${L_{\rm{d}}}/W = 0.75{q^{1/3}}{\rm{C}}{{\rm{a}}_{\rm{c}}}^{ - 0.2}$ 22.5 55.5 −18.7
Yao等[19] 正T型W=0.6 mm ${L_{\rm{d} } }/W = 1.34 + 1.623\dfrac{ { {q^{\rm{d} }_V } } }{ { {q^{\rm{c} }_V} - {q^{\rm{leak}}_V} } }$
甘油+SDS 辛烷 Case I ${ { {q}^{\rm{leak}}_{V} } }/{ { {q}_{V} }_{ {\rm{c} } } }\;=0.069\;8{\rm{C} }{ {\rm{a} }^{-0.269} }{ {q}^{0.041\;4} }$ 16.0 42.8 14.6
辛烷+ SPAN80 甘油 Case II ${ { {q}^{\rm{leak}}_{V} } }/{ { {q}_{V} }_{ {\rm{c} } } }\;=0.028\;2{\rm{C} }{ {\rm{a} }^{-0.321} }{ {q}^{0.249} }$ 13.0 41.2 7.2
魏丽娟等[22] 侧T型W=0.4 mm 水+甘油+SDS 环己烷 ${L_{\rm{d}}}/W = 0.85{\left( {{H}/{W}} \right)^{0.08}} + 1.28q{\left( {{H}/{W}} \right)^{ - 0.54}}$ 13.8 29.2 −13.8
本研究 正T型W=0.4 mm 水+SDS 硅油 ${L_{\rm{d}}}/W = 0.522\;5{q^{0.129}}{\rm{C}}{{\rm{a}}_{\rm{c}}}^{ - 0.227}$ 6.7 17.7 5.2
水+SDS 硅油 ${L_{\rm{c}}}/W = 2.28{q^{ - 0.63}}{\rm{C}}{{\rm{a}}_{\rm{c}}}^{0.01}$ 14.5 38.2 2.1