Structure optimization and experiment on diffuser of main mine fan
CHEN Shi-qiang
WANG Hai-qiao
LI Yi-qun
CHEN Chong-xin
Abstract：On the basis of engineering practice from such a coal mine, the numerical calculation analyses of 28 boundary conditions of slope diffuser were made by renormalization group turbulence model, and five boundary conditions model experiment analyses were made by similarity criteria. With comparing and analyzing results from two research tools, it is pointed out that structure of slope diffuser mismatches velocity distribution of inflow. With superimposing velocity potential equation between non-uniform planar inflow and virtual sink, outlines of saving energy diffuser were constructed. By virtue of numerical calculations and model experiments, the optimized section enlarging ration of saving energy diffuser is found out, namely the numerical value is 2. 28. Comparing numerical calculation results with model experiment results, it is educed that structure of saving energy diffuser basically matches velocity distribution of inflow.
Keywords：main fandiffuser structurerenormalization groupsimilarity criteriavelocity distribution of inflowoutlines equation
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1681-1686 )