%0 Journal Article
%T Dissipative particle dynamics simulation of flow around a mesoscopic sphere with different Reynolds numbers<br>介观尺度流体绕流球体的耗散粒子动力学模拟
%A Chang Jian-Zhong
%A Liu Han-Tao
%A Liu Mou-Bin
%A Su Tie-Xiong
%A <br>常建忠
%A 刘汉涛
%A 刘谋斌
%A 苏铁熊
%J 物理学报
%D 2012
%I 
%X Dissipative particle dynamics (DPD) is used to investigate the flow passing through a three-dimensional sphere within two parallel plates. The sphere and the plates are composed of frozen DPD particles which are in an equilibrium state. The fluid is driven by a dimensionless external force exerting on each fluid particle. The force on the sphere is computed from the total particles consistituting the sphere. After the flow is fully developed, the obtained results, including the force exerted on the sphere is computed, and then we can calculate the drag coefficient. The accuracy and the reliability are compared with classical results. The results show that the DPD method can predict drag coefficient accurately when Re is less than 100. However, when Re is bigger than 100, the results deviate from analytical values, which is due mainly to the fluid compressibility.
%K meso-scale
%K dissipative particle dynamics
%K drag coefficient<br>介观尺度
%K 耗散粒子动力学
%K 阻力系数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=790A9358A1C1D6553FC6DD0D4D21407F&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=0B39A22176CE99FB&sid=63007B593185E2C4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=26