Molecular Dynamic Study of Dropwise Condensation on the Metal Surface Coated by a Monolayer Polymer Network
Received date: 2003-01-03
Revised date: 2003-02-17
Online published: 2004-01-10
梁世强 , 徐靖中 . 在金属表面络合网格状高分子膜实现滴状冷凝的MD模拟研究[J]. 中国科学院大学学报, 2004 , 21(1) : 26 -32 . DOI: 10.7523/j.issn.2095-6134.2004.1.004
By complexing a kind of polymer network onto the copper surface,a new model of dropwise condensation for water vapor is proposed. It is contended that the monolayer spread film can be tightly attached to the metal surface by a number of coordination bonds and can be self- repairable,so that longer duration and higher heat transfer efficiency may be anticipated.A criterion of dropwise or filmwise condensation was in-troduced and MD simulations were carried out to calculate the cohesive energy of water and adsorptive energy of surface. The results indicate that dropwise condensation can occur on the polymer network surface,and the particle configurations indicate that the big rings of the network may play the role of nucleation center sites.
Key words： dropwise condensation; polymer network; MD; nucleation center site
[1] 杨世铭传热学北京:高等教育出版社，1987
[2] 曹治觉，郭愚冷凝器滴状冷凝的超临界系数和Brown凝并，工程热物理学报，2002,23(1) :5一8
[3] 曹治觉冷凝器滴状冷凝的动态描述及接触角的选择物理学报，2002,51(1) :25-30
[4] 曹治觉，郭愚冷凝器壁面滴状冷凝的热力学机理及最佳接触角物理学报，1999,48(10) : 1823-1830
[5] 顾剑文，陈晓东，孙玉清水蒸气在船用冷凝器中的滴状冷凝的分析大连海事大学学报，1998,24(3) :85-88
[6] 岳丹婷，李品芳，李青，舒宏纪滚动脱落实现滴状冷凝的分析大连海事大学学报，1999,25(1) :95-98
[7] Peter C，Wayner Jr·Nucleation，growth and surface movement of a condensing sessile droplet·Colloids and Su扩aces，A : Physicochemi-cal and Engineering Aspects,2002，20G:157一1G5
[8] Gerd Koch，均eld Kraft，Alfred Leipertz。Parameter study on the performance of dropwise condensation。Rev。Genl Therm。，1998，37:539一548
[9] 杨杰辉，程立新在复合镀层表面上实现滴状冷凝传热的研究化学工程,1996,24:(4),38-41
[10] 赵起，林纪方滴状冷凝工业应用研究进展，化工进展，1991,2 :17-20
[11] Zhang DongChang，Lin Zai-Qi，Lin Ji-Fang。New surface materials for dropwise condensation。Proc。8th Int。Heat Mass Tran}erCo of。，1986，4:1677
[12] 黄明全，李增印，王苇发展中的滴状冷凝强化换热研究舰船科学技术，2002,24(4) :52-56
[13] 赵起实现水蒸汽和有机蒸气滴状冷凝新表面材料的研究:[博士学位沦文] 大连:大连理工大学。1989
[14] Tanasawa I. Advances in condensation heat tran}er。Advances in Heat Transfer，1991，21 :55
[15] 杜长海，马学虎，徐敦硕超薄PTFE表面上滴状冷凝的传热研究化学工业与工程,2000,17(4) :192-197
[16] 刘旭，徐敦硕CrrB TA低能表面强化冷凝传热研究大连理工大学学报，1996,36(2) :162-164
[17] Belonovskaya G P，et al. Interpenetrating polymer networks based on diisocyanates and polar monomers o European Polymer J。，1976，12:817一823
[18] 赵起，林纪方量子化学方法用于预测实现滴状冷凝新表面材料的研究见:中国工程热物理学会传热传质学术会议1991 }79-83
[19] Allinger N L. Conformational analysis 130. MM2. A Hydrocarbon force field utilizing V1 and V2 torsional Terms. J. of AmericanChem.S oc.，1977，99:8127-8134
[20] Allinger N L，Y H Yuh，J J Li·Molecular mechanics. The MM3 force field for Hydrocarbons I. J. of American Chem.S oc.，1989，111:8551一9556
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