Abstract
The noise reduction of the filter-setting equipment with a filter element in it was measured to determine the acoustical parameters of the filter element,by combining with finite element method(FEM).Results show that FEM can be used to analyze the acoustical properties of the filter element.A computational fluid dynamics(CFD) approach was employed to calculate noise reductions of both the filter-equipment and an air-cleaner with and without the filter element.The CFD-calculated results agreed well with the measured results when the filter element was not installed.However,when the filter element was installed,the CFD-calculated result showed greater error than the FEM-calculated results.Features of the FEM and CFD approach of analyzing acoustical properties of the filter element were analyzed.A CFD-based engineering approach was proposed to determine and set acoustical parameters of a filter element.
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