环境工程学报2012，Vol.6Issue(12)：4642-4648,7.
市政污泥流变特性及圆管流数值模拟研究
Rheologic properties of municipal sludge and a numerical simulation of pipe flow based on that
摘要
Abstract
By measuring the viscosity of municipal sludge, the relationship data of the shear rate and shear stress of sludge were obtained, and the shear-thinning phenomenon was observed. The yield stress and critical shear rate were simultaneously solved by parallel sub-fitting method, and then a full range of sludge flow curve was gained. The results, which numerical simulation of pipe flow sludge through establishing a simplified model, were close to the empirical formula and experimental results of references. And we founded that diameter, flow rate and flow index have significant effects on the pipeline flow. When other conditions remain unchanged, reducing the flow diameter of 33% can lead driving pressure to increase 152.1%, and increasing the flow rate 10 times can lead driving pressure to in- crease 11 times, as well as increasing the flow index 10 times can lead driving pressure to decrease 20.2%.关键词
流变特性/流变模型/数值模拟/圆管流/市政污泥Key words
rheologic properties/rheological model/numerical simulation/pipe flow/municipal sludge分类
资源环境引用本文复制引用
黄河洵,陈汉平,蔡兴飞..市政污泥流变特性及圆管流数值模拟研究[J].环境工程学报,2012,6(12):4642-4648,7.基金项目
“十二五”支撑计划课题 （）
湖北省自然科学基金 （）
