红土矿类浆体管道水力计算

Study on hydraulic calculation of laterite slurry pipeline

根据红土矿类浆体流型,托马斯和杜兰德对低浓度牛顿流体和高浓度非牛顿宾汉流体有效黏度进行了定义,设定层流变为紊流的临界过渡雷诺数,导出临界过渡流速计算方法。汉克斯根据刚度系数定义的雷诺数和屈服应力、刚度系数定义的赫氏数导出临界过渡流速计算方法,托马斯、杜兰德和汉克斯三种方法均可供设计参考。设计者可根据经验和实际情况酌情选用。汉克斯方法计算比较复杂,己编成计算程序供设计应用。

According to the flow pattern of laterite slurry,Thomas and Durand defined the effective viscosity of low concentration Newtonian and high concentration non Newtonian Bingham bodies.The critical transition Reynolds number of turbulent flow is set and the critical transition velocity is derived.Hanks calculated the critical transition Reynolds number and calculated the critical transition velocity according to the Reynolds number defined by the stiffness coefficient of clothing and the Hirschner number defined by the stiffness coefficient of yield stress.Thomas,Durand and Hanks methods can be used for design reference.The designer can choose to use according to experience and actual situation.Hanks method is very complex in calculation and has been programmed for design and application.