基于数值和物理试验的水力旋流器参数配置优化研究

项目名称： 基于数值和物理试验的水力旋流器参数配置优化研究

项目编号： No.51474054

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 矿业工程

项目作者： 魏德洲

作者单位： 东北大学

项目金额： 81万元

中文摘要： 水力旋流器作为离心惯性力与重力复合力场的典型设备，广泛应用于物料分离领域。就固体物料而言，旋流分离实质上是不同密度、不同粒度的颗粒在旋流复合力场中运动行为差异所致。对于任一给定粒群的旋流分离作业，旋流器流场对分离结果起决定作用，局部存在的高强度湍流和短路流是影响分离效率的关键，因此在水力旋流器分离作业中，通过结构参数和操作参数的合理配置，以减少甚至消除流场中的局部高强度湍流和短路流，对提高分离效率至关重要，但目前尚缺乏系统的相关研究。本研究首先利用流场测试等物理试验方法获取必需的流场数据，并以此为基础，对流场数值计算方法的边界条件和相关参数进行修正。其次利用数值方法系统研究结构参数和操作参数不同配置对水力旋流器内部流场的影响，进而确定获得平稳流场的最佳参数配置。最后进行固体颗粒的数值和物理旋流分离试验，以验证最优参数配置的数值试验结果。

中文关键词： 水力旋流器；参数配置优化；流场；数值试验；分离效率

英文摘要： As a typical device based on complex force field of centrifugal force and gravity, hydrocyclone has been widely used in many areas of separation. For solid particles' separation, the essence of the hydrocyclone separation is based on the movement behavior differences of solid particles with various size and density in the complex force field. For the separation of a given particle group, inner flow field of hydrocyclone plays a decisive role, local high intensity turbulence and short-circuit current are the key elements that affect separation efficiency. It is fair to say that the configuration optimization of hydrocyclone parameters is crucial importance in improving the separation efficiency in hydrocyclone separation operations. And we should note that the systematic researches about that are scant. In this study, physical measurement experiments will be conducted to obtain the necessary flow field data, which will be used as the boundary conditions and relative parameters of numerical simulation of flow field, the numerical results will be validated by the physical experiments too. Systematic researches of flow fields inside hydrocyclones will be performed by use of numerical method, flow fields under different structural and operational parameters will be investigated specially, to make sure the optimal configurations of different parameters for obtaining the smoothest flow field. Finally, numerical and experimental separations of solid particles will be conducted to validate the final numerical separation results under the optimal configuration of hydrocyclone parameters.

英文关键词： hydrocyclone;parameter configuration optimization;flow field;numerical experiment;separation efficiency