纳米流体液滴在铁板上蒸发的动力学研究
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摘要
液滴蒸发过程中的动力学研究对提高喷墨打印、农药喷洒的质量具有一定指导作用,本工作采用角度仪对去离子水液滴和浓度为0.05%、粒径为10 nm的氧化铝纳米流体液滴在30℃和40℃铁板上的蒸发过程进行了录像记录和比较,包括液滴蒸发过程中三相线、接触角、液滴轮廓随时间变化规律。实验结果表明加入纳米颗粒后液滴蒸发行为有明显不同:在蒸发的第一阶段三相线固着时间更长,三相线的粘滑运动次数减少。
The kinetic study in the process of droplet evaporation has a certain guiding effect on improving the quality of inkjet printing and pesticide spraying. In this work, the angled instrument was used to record and compare the evaporation process of deionized water droplets and droplets of alumina nanofluids with a concentration of 0.05% and particle size of 10 nm at 30 ℃ and 40 ℃. It includes the variation of three-phase line, contact angle and droplet profile with time during droplet evaporation. The experimental results show that the droplet evaporation behavior is significantly different after the addition of nanoparticles: in the first stage of evaporation, the three-phase line fixation time is longer, and the number of stick-slip movements of the three-phase line is reduced.
The kinetic study in the process of droplet evaporation has a certain guiding effect on improving the quality of inkjet printing and pesticide spraying. In this work, the angled instrument was used to record and compare the evaporation process of deionized water droplets and droplets of alumina nanofluids with a concentration of 0.05% and particle size of 10 nm at 30 ℃ and 40 ℃. It includes the variation of three-phase line, contact angle and droplet profile with time during droplet evaporation. The experimental results show that the droplet evaporation behavior is significantly different after the addition of nanoparticles: in the first stage of evaporation, the three-phase line fixation time is longer, and the number of stick-slip movements of the three-phase line is reduced.
引文
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2 马力,仇性启,王健.工业加热,2012,41(4),36.
3 Deegan Robert D ,Olgica Bakajin,Dupont Todd F,et al.Nature,1997,389,827.
4 Hu H,Larson R G.The Journal of Physical Chemistry B,2006,110(14),7090.
5 Ward C A,Duan F.Physical Review E,Statistical,Nonlinear,and Soft Matter Physics,2004,69,056308.
6 Ruey-Hung Chen,Tran X Phuoc,Donald Martello.International Journal of Heat and Mass Transfer,2011,54(11),2459.
7 Ruey-Hung Chen,Phuoc Tran X,Donald Martello.International Journal of Heat and Mass Transfer,2010,53(19-20),3677.
8 Krishnamurthy S,Bhattacharya P,Phelan P E.Nano Letters,2006,6(3),419.
9 Hemanth Kumar D,Patel Hrishikesh E,et al.Physical Review Letters,2004,93(14),144301.
10 Prasher Ravi,Song David,Wang Jinlin,et al.Applied Physics Letters,2006,89,133108.
11 Fei Duan,Dingtian Kwek,Alexandru Crivoi.Nanoscale Research Letters,2011,6,1.
12 Sefiane K,Bennacer R.Advances in Colloid and Interface Science,2009,147-148,263.
13 Radiom Milad,Yang Chun,Chan W K.Nanoscale Research Letters,2013,8(1),282.
14 Ross Moffat J ,Khellil Sefiane,et al.The Journal of Physical Chemistry B,2009,113,268860.
15 Ross Moffat J,Khellil Sefiane,et al.Journal of Nano Research,2009,7,75.
16 Daniel Orejon,Khellil Sefiane,Shanahan Martin E R.Langmuir,2011,27(21),12834.
17 Alexandros Askounis,Khellil Sefiane,et al.Physical Review E,2013,87,12301.
18 Neeharika Anantharaju,Mahesh Panchagnla,Sudhakar Neti.Journal of Colloid and Interface Science,2009,337(1),176.
19 Ross Moffat J,Khellil Sefiane,Shanahan Martin E R.Journal of Nano Research,2009,7,75.
20 Daniel Orejon,Khellil Sefiane,Shanahan Martin E R.Langmuir,2011,27(21),2834.