Characterizing and Reducing Acoustical Noise Radiation in Small Piezoelectric Blowers

Utah State University

The purpose of this paper is to outline the progress being made in classifying acoustic radiation emitted by piezoelectric blowers and developing methods for reducing said radiation. A description of the function and purpose of a piezoelectric blower is given. The problem of noise generation is outlined and described. Methods to characterize and identify the source of acoustic noise are discussed. A DNS approach to modeling turbulent air flow is presented. The benefits of a valid DNS model are discussed along with the complications inherent in DNS modeling. A DNS model of a piezoelectric blower is described and methods for validating the model are presented.