静态水体大气复氧理论的实验研究  

Experimental research of reaeration theory in static water body

作　　者：李莉红[1] 雒文生[1] 贺涛[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2003年第5期66-69,共4页Engineering Journal of Wuhan University

摘　　要：通过理论推导和实验分析,对水体静态条件下大气复氧的分子扩散理论进行检验,证明DonaldJ.O'con nor与WilliamE.Dobbins在"天然河流中的复氧机理"一文中所列的分子扩散理论复氧公式和根据实验对公式的修正是不正确的。在给出正确公式的同时,并用实验给以证实。在此基础上提出了水体同时考虑分子扩散和紊动扩散耦合的复氧系数计算公式.Through theoretical derivation and experimental analysis,the reaeration theory of molecular diffusion is checked; and that the reaeration formula of molecular diffusion and its amendment in the literature of the mechanism of reaeration in natural streams by Donald J. O'connor and william E.Dobbins are not correct, is proved too. Meanwhile,the correct formula is verified through strict experiments. On the basis of these,the calculating formula of reaeration coefficient considering the coupling of molecular diffusion and turbulent diffusion is brought forward.

关 键 词：静态水体 大气复氧 分子扩散 紊动扩散 

分 类 号：TV131.2[水利工程—水力学及河流动力学]