%0 Journal Article
%T SCALAR VARIANCE SPECTRUM IN ENSTROPHY CASCADE RANGE OF 2-D TURBULENCE<br>涡度拟能传输惯性区二维湍流标量场方差谱
%A Qian Jian
%A <br>钱俭
%J 力学学报
%D 1992
%I 
%X The nonequilibrium statistical-mechanics theory of a passive scalar field convected by turbulence is applied to study the variance spectrum G(k) of a 2-D (two-dimensional) turbulent passive scalar field in the convective range, while the velocity spectrum E(k)= cX2/3k-3 in the enstrophy cascade range, here X is the enstrophy dissipation rate, C is a dimensionless coefficient. The closure equations in this case are divergent due to the nonlocalness of the cascade process in 2-D turbulence. In order to overco...
%K turbulence
%K turbulence spectrum
%K statistical theory of turbulence<br>湍流
%K 标量场
%K 方差谱
%K 涡度拟能
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=5727CD940BB65DFA29B151E42B4A7B7E&yid=F53A2717BDB04D52&vid=B91E8C6D6FE990DB&iid=E158A972A605785F&sid=8ACD9060100C26F1&eid=1E9426A299DC9FFD&journal_id=0459-1879&journal_name=力学学报&referenced_num=0&reference_num=4