基于CFD方法优化水力式流浆箱湍流发生器的结构

Structural optimization of turbulence generator of hydraulic headbox based on CFD method

水力流浆箱湍流发生器性能主要以湍流强度和湍流尺度为评价标准。通过运用FLUENT软件对出口横截面为正六边形的渐扩型湍流发生器在不同的入口速度以及不同的结构尺寸下进行一系列的数值模拟,讨论了浆料流速及结构尺寸对湍流发生器的影响,确定了出口为正六边形湍流发生器的优化尺寸。

Turbulent intensity and turbulent scale are the assessment bases of turbulence generator in hydraulic headbox.After a series of numerical simulation of turbulence generator with hexagonal outlet with the help of software FLUENT at the different of velocities and structures,the influencing factors of flow velocities and the structure were discussed,the optimum size of the turbulence generator was determined.