桨式搅拌器安装高度对搅拌效果的数值模拟

摘要

搅拌器安装高度对搅拌效果的影响一般采用实验研究方法,运用数值模拟技术系统的研究较少.通过FLUENT软件系统地研究了桨式搅拌器在不同安装高度下搅拌槽内流场的湍流强度分布、流速分布以及在不同安装高度下搅拌功率的大小.结果表明,搅拌器在合适的安装高度下,搅拌功率随着安装高度的增加有细微的减小；在不合适的安装高度下,搅拌效果会受到影响,功率会增加.%This paper uses the experimental method to research on the mixing effect of blender installation height generally instead of the use of the numerical simulation method.lt also makes a study of the turbulence intensity distribution of flow field in stirred tank, velocity distribution and mixing power through the FLUENT software systems for OAR type stirrer at the different installation height. Results indicate that, at the appropriate installation height, the mixing power is slightly reduced with the height increase; at the inappropriate installation height, mixing effect is affected, but the power is increased.