中国电机工程学报2013，Vol.33Issue(2)：46-51,前插7,7.
污泥水焦浆管道输送的壁面滑移和减阻特性
Wall Slip Behaviors and Drag-reduction Properties of Sludge Coke Slurry in Pipe Flow
摘要
Abstract
Experimental studies were carried out on a bench-scale slurry transportation facility to investigate rheological features, wall slip and drag resistance of sludge coke slurry (SCS). A numerical technique based on Tikhonov regularization was used to determine the true rheological characteristics and slip behavior at the pipe wall. The results show that: water coke slurry (WCS) is dilatant fluid and sewage sludge can alter its rheological properties. When mixing sewage sludge by proportion of 5% in mass into WCS, shear thickening property of the WCS is weakened. When sewage sludge proportion reaches up to 10%, WCS changes from dilatant fluid to pseudo-plastic fluid as shear rate increase. Slip velocity of WCS has an accelerating growth trend with increase of shear rate; the trend is reverse as sewage sludge is added into the WCS. Drag coefficient of WCS in pipe flow is larger than that of SCS when an amount of sewage sludge is added into the WCS. Drag reduction rate of WCS increases with ascending velocity, while that of SCS containing sewage sludge decreases with ascending velocity.关键词
污泥/水焦浆/壁面滑移/真实流变特性/滑移减阻Key words
sewage sludge/ water coke slurry/ wall slip/ real rheology/ drag reduction with slip分类
能源科技引用本文复制引用
马修元,段钰锋,刘猛..污泥水焦浆管道输送的壁面滑移和减阻特性[J].中国电机工程学报,2013,33(2):46-51,前插7,7.基金项目
国家重点基础研究发展计划(973计划)项目资助(2010CB227001) （973计划）
国家重点实验室开放基金资助(ZJUCEU2010002,ZJUCEU2010010). （ZJUCEU2010002,ZJUCEU2010010）
