5. Numerical Investigation of the Flow-Induced Noise in a Turbulent Flow Inside an HVAC Duct

The chapter delves into the numerical investigation of flow-induced noise within a turbulent flow inside an HVAC duct, focusing on the application of computational fluid dynamics (CFD) simulations. It begins by highlighting the significance of understanding flow-induced noise in various industrial contexts, such as reducing fuel consumption and improving environmental comfort. The study explores the challenges and limitations of experimental, analytical, and numerical approaches to predicting aeroacoustics, with a particular emphasis on the computational efficiency of CFD simulations. The methodology includes physical, mathematical, and numerical modeling, as well as data processing techniques. The physical modeling section describes the experimental setup and conditions, while the mathematical modeling section outlines the equations and turbulence models used. The numerical modeling section details the Finite Volume Method (FVM) and the different schemes evaluated for advection. The results and discussion compare the numerical simulations with experimental data, highlighting the impact of different discretization schemes on the accuracy of sound pressure level predictions. The chapter concludes by emphasizing the importance of careful mesh refinement and future research directions in the field of flow-induced noise.