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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Rheology and flow characteristic of urban untreated sewage for cooling and heating source
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Rheology and flow characteristic of urban untreated sewage for cooling and heating source

机译：城市未经处理的冷热源污水的流变学和流动特性

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摘要

Urban untreated sewage is a kind of excellent cooling and heating source. The rheology and flow characteristic of sewage is the basis of the application of sewage cooling and heating source system. They are studied based on the theoretical assumption of single flow model, principle of tube-type rheometer, and field experiments. The rheological basic equations and flow characteristic of urban untreated sewage are developed. The results of research indicate that sewage has the characteristic of non-Newtonian power-law. The rheological basic equation is τ=0.0031γ?0.92. The distance coefficient of drag in turbulence of sewage in circle pipe is λt=0.186(Re′)-0.208. The equations of velocity distribution of sewage are, respectively, v~+=2.5lny~++5.7, v~+=5.11lny~+-3.22, and v~+=y~+ in turbulence, intermediate, and laminar current zone in circle pipe. Those can be used to instruct engineering application, design, analysis, and farther research of the system.
机译：城市未经处理的污水是一种优良的制冷和供热源。污水的流变学和流动特性是污水冷却和热源系统应用的基础。基于单流模型的理论假设，管式流变仪的原理以及现场实验对它们进行了研究。建立了城市未经处理污水的流变基本方程和流量特性。研究结果表明，污水具有非牛顿幂律的特征。流变基本方程为τ＝0.0031γ≤0.92。圆管中污水湍流的阻力距离系数为λt= 0.186（Re'）-0.208。在湍流区，中流区和层流区中，污水的速度分布方程分别为v〜+ = 2.5lny〜++ 5.7，v〜+ = 5.11lny〜+ -3.22和v〜+ = y〜+在圆管中。这些可以用于指导系统的工程应用，设计，分析和进一步研究。

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