Optimization Design of Mathematical Modeling for Leakage Noise Reduction of Bionic Fan Blade

We used the characteristics of the birds' wings, the blades of the fan are improved, and several factors that influence the noise of the bionic leaves are experimentally analyzed. Finally, the striped width of the leaves, the stripes of the leaves and the thickness of the leaves are taken as factors A, B, and C. The parameters of the bionic fan are measured and recorded. The data are analyzed by the difference and variance analysis. The relevant noise reduction data are obtained and the mathematical model is established by using the data to facilitate the noise reduction effect of the bionic fan. Introduction Fan blade noise sources include aerodynamic noise and mechanical noise, where we mainly the discussion of aerodynamic noise. Pneumatic noise is the noise generated by the interaction of gas during the flow and the fan blades, ducts and rectifiers. We can improve the noise by improving the structure of the fan, the shape of the blade, the material of the blade and the duct. And the advantages of bionic leaves here have been fully reflected, there is a better noise reduction effect. We use the characteristics of the bird wing, combined with the fan, the axial fan blade bionic deformation, respectively, in the blade surface or edge set the jagged form, stripes and concave shape, in order to test the modified fan blades Whether the effect of reducing the noise, we combined with the original fan blade with the experimental comparison, the results show that the bionic transformation of the leaves in the noise reduction is indeed more superior than the original leaves.In order to further explore the factors affecting the noise reduction effect of bionic leaves, we have made orthogonal experiments on striped bionic leaves.The spacing of the stripes and the thickness of the blades are set to three influencing factors A, B and C respectively. Each factor has two levels.Through the comparison of experimental results[1]. Extreme analysis of experimental conditions and experimental results Experimental method:The purpose of the experiment is to investigate the effect of different horizontal parameters on the noise generation during the operation of the blade. Through the comparison of the experimental results, the main factors affecting the noise reduction effect are determined, and the effect of the noise reduction is different And the mathematical model is used to study and analyze the noise reduction of bionic leaves. In order to reduce the experimental measurement error and the impact of the outside world on the measurement results, each of the different levels of the parameters of the bionic leaf experiment to do three times, the statistical results, the average value of the analysis[2]. Specific experimental parameters in Table 1. Table 1 Bionic leaf noise reduction effect of experimental factors level table Factor Level 1 2 Blade stripes width A(mm) 0.5 1.0 Leaf stripes spacing B(mm) 0.5 1.0 Blade thickness C(mm) 0.2 0.4 For the different levels of the bionic leaves were orthogonal arrangement, see Table 2 5th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2017) Copyright © 2017, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). Advances in Engineering, volume 126