热污染带分析研究

在分析热污染带掺混段混合机制的基础上,提出对近区复杂的、难以定量分析的掺混作用,用等效的从某一虚源开始的扩散作用来描述,并用虚源的位移长度来衡量掺混的效应.建立了虚源位移长度和横向扩散系数的求解方法以及位移长度与水力因子之间的复相关关系.

A STUDY ON THERMO POLLUTED ZONES

According to the analysis on the mixing mechanism of cooling water fromapower plants with river flow and the factors affecting the spreading of cooling water in the near field of thermopollution, a concept of hypothetical pollution sources, with which the mixing efficiency can be judged, was proposed. A compound correlation diagram showing the positions of the hypothetical sources and the discharge factors, as well as the methods used to compute the distance from an outlet to the hypothetical sources and lateral diffusion parameters were developed. Based on the above results, the convection diffusion models can be directly used to estimate the temperature distribution in thermo-polluted zones.