Chaotic Mixing of Viscous Fluids in Continuous Flows: Basic Issues and Applications

将实验/数值模拟相结合的方法， 应用于研究混沌混合现象的发生， 强粘性流，通常湍流不会 发生. 这种现象被称为混沌平流， 一些案例已经在二维研究 具有随时间变化的流动力的几何形状。 本 研究是进行实验和进行数值计算， 三维几何形状的模拟。 要考虑的情况是一种新型的螺旋环形混合器 以及分隔的管道混合器，其中流体 当它沿管道向下流动时周期性地重新定向。

A combined experimental/numerical simulation approach will be applied to study the onset of chaotic mixing phenomena in strongly viscous flows where ordinarily turbulence will not occur. This phenomenon is known as chaotic advection, and a number of cases have been studied in two-dimensional geometries with time-varying forcing of the flow. The present research is to conduct experiments and perform numerical simulations in three-dimensional geometries. The cases to be considered are a novel helical annular mixer and a partitioned pipe mixer in which the fluid is periodically reoriented as it flows down the pipe.