Recently, the noise problem has been recognized as a serious problem in addition to pollution such as fine dust due to industrialization. In this paper numerical analysis methods using computational fluid dynamics (CFD) and computational aeroacoustics (CAA) was performed using the CFD general notation system (CGNS) and developed the S/W for visualizing the analyzed result of flow noise. The aerodynamic noise analysis S / W has been developed to deal larger models and larger grids.