摘要
论文导出了定长槽的单向弥散方程解。解包含槽下游封闭和开敞并伴有流速的两种条件。根据定长槽和半无限长槽单向弥散方程解的比较结果,只要弥散系数D和流速u相等,且弥散前锋尚未到达定长槽下游边界以前,那么两者相对浓度C/C0的分布相同。据此,可取定长槽进行试验,而用相应于半无限长的简单公式计算分析。
In this paper,the solutions of one dimensional dispersion equation for a canal of definite length are derived on the below conditions： 1.canal＇s downstream boundary is sealed and the fluid is static;2.canal＇s downstream boundary is unsealed and the fluid possesses a certain flow velocity.If the dispersion coefficient D,fluid flow velocity u and the boundary concentration C0 of definite length canal and half infinite length canal are equal,and the dispersion front has not reached the downstream boundary of definite length canal,the concentration distribution C（x,t） of definite length canal and half infinite length canal are equal too.Therefore it can be tested by definite length canal and calculated（analyzed） by the simpler formula of half infinite length canal.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2011年第6期674-680,共7页
Chinese Journal of Hydrodynamics
关键词
地下水
污染
扩散
弥散
groundwater
pollution
diffusion
dispersion
