%0 Journal Article
%T ON THE DYNAMICAL CHARACTERISTIC OF THE ROUGHNESS IN THE TURBULENT BOUNDARY LAYER<br>粗糙度动力学特性的初步研究
%A Mu Qingsong Wang Jiancheng Miao Tiande
%A <br>慕青松
%A 王建成
%A 苗天德
%J 力学学报
%D 2003
%I 
%X Mathematical analysis and numerical simulation is performed for the flow field near a rough wall based on an improved theoretical model proposed for the problem. It is found that the roughness decreases nonlinearly as the wind velocity above the boundary layer increases, which satisfactorily explains the current experimental results. Therefore, contrary to the traditional opinion that the roughness is just a geometrical parameter depending only on the shape of the rough wall, it is a dynamical parameter relevant to the flow field near the wall besides the geometrical shape of the wall.
%K rough wall
%K roughness
%K dynamical characteristic<br>粗糙壁面
%K 粗糙度
%K 动力学特性
%K 湍流
%K 风速
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=0003641BE0F427C3&yid=D43C4A19B2EE3C0A&vid=6209D9E8050195F5&iid=0B39A22176CE99FB&sid=28F8B56DB6BEE30E&eid=03A030BB0C519C60&journal_id=0459-1879&journal_name=力学学报&referenced_num=6&reference_num=14