%0 Journal Article
%T Boundary Slip and Surface Interaction: A Lattice Boltzmann Simulation<br>Boundary Slip and Surface Interaction： A Lattice Boltzmann Simulation
%A CHEN Yan-Yan
%A YI Hou-Hui
%A LI Hua-Bing
%A <br>陈艳燕
%A 伊厚会
%A 李华兵
%J 中国物理快报
%D 2008
%I 
%X The factors affecting slip length in Couette geometry flows are analysed by means of a two-phase mesoscopic lattice Boltzmann model including non-ideal fluid-fluid and fluid-wall interactions. The main factors influencing the boundary slip are the strength of interactions between fluid-fluid and fluid-wall particles. Other factors, such as fluid viscosity, bulk pressure may also change the slip length. We find that boundary slip only occurs under a certain density (bulk pressure). If the density is large enough, the slip length will tend to zero. In our simulations, a low density layer near the wall does not need to be postulated a priori but emerges naturally from the underlying non-ideal mesoscopic dynamics. It is the low density layer that induces the boundary slip. The results may be helpful to understand recent experimental observations on the slippage of micro flows.
%K 47
%K 11
%K -j
%K 47
%K 61
%K -k
%K 68
%K 03
%K Cd
%K 83
%K 50
%K Rp<br>库爱特几何流动
%K 边界滑动
%K 表面相互作用
%K 玻尔兹曼模拟
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=1A8340FEDE28A57394C7CA2AE494D2FC&yid=67289AFF6305E306&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=798FBE8DE1A255B1&eid=3E0812ED84A7B31D&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=38