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In this paper, we study the capillary flows in square tubes and in equilateral triangle tubes under microgravity condition by performing experiments in drop tower, and also compare them with those in circular tubes. Experimental results showned the influence of both size and shape of tubes on the capillary flow driven by interfacial forces. For tubes of the same shape, the influence of tube size is quite similar. Moreover, the capillary flows in square tubes and equilateral triangle tubes have some similarity with those in circular tubes with much smaller sizes. The results are helpful for understanding the capillary flows driven by interfacial forces with different parameters. And they are also useful for independently controlling the flow velocity and the volume flow rate by choosing appropriate tube shapes under microgravity condition.
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Keywords:
- microgravity /
- capillary flow /
- shapes of capillary tubes
[1] Young T 1805 Phil. Trans. Roy. soc. Lond. 95 65
[2] Bonn D, Eggers J, Indekeu J, Meunier J, Rolley E 2009 Rev. Mod. Phys. 81 739
[3] De Gennes P G 1985 Rev. Mod. Phys. 57 827
[4] Chibowski E 2007 Adv. Colloid Interface Sci. 133 51
[5] u S H, Wang L W, Sun Z W, Wang C X 2012 Acta Phys. Sin. 61 166801 (in Chinese) [徐升华, 王林伟, 孙祉伟, 王彩霞 2012 61 166801]
[6] Sikalo S, Wihelm H D, Roisman I V, Jakirlic S, Tropea C 2005 Phys. Fluids 17 062103
[7] Reznik S N, Yarin A L 2002 Phys. Fluids 14 118
[8] Bazhlekov I B, Shopov P J 1997 J. Fluid Mech. 352 113
[9] Xu S H, Wang C X, Sun Z W, Hu W R 2011 Int. J. Heat Mass Trans. 54 2222
[10] Wang C X, Xu S H, Sun Z W, Hu W R 2010 Int. J. Heat Mass Trans. 53 1801
[11] Brady V, Concus P, Finn R 2003 Phys. Fluids 15 1545
[12] Tsori Y 2006 Langmuir 22 8860
[13] Erickson D, Li D, Park C B 2002 J. Colloid Interface Sci. 250 422
[14] Dreyer M E, Delgado A, Rath H J 1994 J. Colloid Interface Sci. 163 158
[15] Stange M, Dreyer M E, Rath H J 2003 Phys. Fluids 15 2587
[16] Wang C X, Xu S H, Sun Z W, Hu W R 2009 AIAA J. 47 2642
[17] Concus P, Finn R 1974 Acta Math. 132 177
[18] Concus P, Finn R 1974 Acta Math. 132 207
[19] Finn R 1984 J. Reine Angew. Math. 353 196
[20] Chen Y, Collicott S H 2004 AIAA J. 42 305
[21] Chen Y, Collicott S H 2005 AIAA J. 43 2395
[22] Chen Y, Collicott S H 2006 AIAA J. 44 859
[23] Ichikawa N, Satoda Y 1994 J. Colloid Interface Sci. 162 350
[24] Wolf F G, dos Santos L O E, Philippi P C 2010 J.Colloid Interface Sci. 344 171
[25] Zhang X Q, Yuan L G, Wu W D, Tian L Q, Yao K Z 2005 Scien. China E 35 523 (in Chinese) [张孝谦, 袁龙根, 吴文东, 田兰桥, 姚康庄 2005 中国科学E辑 35 523]
[26] Weislogel M M, Ross H D 1990 NASA-TM-103641 (NASA report)
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[1] Young T 1805 Phil. Trans. Roy. soc. Lond. 95 65
[2] Bonn D, Eggers J, Indekeu J, Meunier J, Rolley E 2009 Rev. Mod. Phys. 81 739
[3] De Gennes P G 1985 Rev. Mod. Phys. 57 827
[4] Chibowski E 2007 Adv. Colloid Interface Sci. 133 51
[5] u S H, Wang L W, Sun Z W, Wang C X 2012 Acta Phys. Sin. 61 166801 (in Chinese) [徐升华, 王林伟, 孙祉伟, 王彩霞 2012 61 166801]
[6] Sikalo S, Wihelm H D, Roisman I V, Jakirlic S, Tropea C 2005 Phys. Fluids 17 062103
[7] Reznik S N, Yarin A L 2002 Phys. Fluids 14 118
[8] Bazhlekov I B, Shopov P J 1997 J. Fluid Mech. 352 113
[9] Xu S H, Wang C X, Sun Z W, Hu W R 2011 Int. J. Heat Mass Trans. 54 2222
[10] Wang C X, Xu S H, Sun Z W, Hu W R 2010 Int. J. Heat Mass Trans. 53 1801
[11] Brady V, Concus P, Finn R 2003 Phys. Fluids 15 1545
[12] Tsori Y 2006 Langmuir 22 8860
[13] Erickson D, Li D, Park C B 2002 J. Colloid Interface Sci. 250 422
[14] Dreyer M E, Delgado A, Rath H J 1994 J. Colloid Interface Sci. 163 158
[15] Stange M, Dreyer M E, Rath H J 2003 Phys. Fluids 15 2587
[16] Wang C X, Xu S H, Sun Z W, Hu W R 2009 AIAA J. 47 2642
[17] Concus P, Finn R 1974 Acta Math. 132 177
[18] Concus P, Finn R 1974 Acta Math. 132 207
[19] Finn R 1984 J. Reine Angew. Math. 353 196
[20] Chen Y, Collicott S H 2004 AIAA J. 42 305
[21] Chen Y, Collicott S H 2005 AIAA J. 43 2395
[22] Chen Y, Collicott S H 2006 AIAA J. 44 859
[23] Ichikawa N, Satoda Y 1994 J. Colloid Interface Sci. 162 350
[24] Wolf F G, dos Santos L O E, Philippi P C 2010 J.Colloid Interface Sci. 344 171
[25] Zhang X Q, Yuan L G, Wu W D, Tian L Q, Yao K Z 2005 Scien. China E 35 523 (in Chinese) [张孝谦, 袁龙根, 吴文东, 田兰桥, 姚康庄 2005 中国科学E辑 35 523]
[26] Weislogel M M, Ross H D 1990 NASA-TM-103641 (NASA report)
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