Study on fluid flow and flow-induced noise simulation for a Circular Cylinder
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This study focuses on the aeroacoustic analysis of flow over a circular cylinder under subsonic conditions, with an emphasis on evaluating turbulence models and noise source treatment strategies. Unsteady flow simulations were conducted at a Reynolds num-ber of 𝑅𝑅𝑅𝑅=9×104 using RANS (��𝑘−ϵ, 𝑘𝑘−ω, and 𝑘𝑘−𝜔𝜔 SST) and LES (Smagorinsky-Lilly, Dynamic Smagorinsky-Lilly, and WALE). Aerodynamic characteristics were analyzed based on separation point, drag coefficients, and Strouhal number. Flow-induced noise was computed using the Ffowcs Williams-Hawkings (FW-H) equation, with acoustic source extracted from both solid and per-meable surfaces. This study examines the influence of turbulence model and noise source extraction methods for flow-induced noise simulation.
Abstract
This study focuses on the aeroacoustic analysis of flow over a circular cylinder under subsonic conditions, with an emphasis on evaluating turbulence models and noise source treatment strategies. Unsteady flow simulations were conducted at a Reynolds num-ber of 𝑅𝑅𝑅𝑅=9×104 using RANS (��𝑘−ϵ, 𝑘𝑘−ω, and 𝑘𝑘−𝜔𝜔 SST) and LES (Smagorinsky-Lilly, Dynamic Smagorinsky-Lilly, and WALE). Aerodynamic characteristics were analyzed based on separation point, drag coefficients, and Strouhal number. Flow-induced noise was computed using the Ffowcs Williams-Hawkings (FW-H) equation, with acoustic source extracted from both solid and per-meable surfaces. This study examines the influence of turbulence model and noise source extraction methods for flow-induced noise simulation.