Aerodynamically Generated Noise Investigation Using Hybrid Approach

This work reports to study and analyze the noise generated by turbulent flow though duct by numerical simulation. Experimental work is already done in the previous publications. This paper majorly focused on correct methodology development in Actran solver to correlate the simulation and experimental results. Numerical simulations are done considering the compressible Navier–Stokes code and Lighthills analogy. First, computational fluid dynamics simulations are done using Navier–Stokes equations and exported the fluctuating components of velocity to acoustic solver for calculation of noise source generation and propagation using Lighthills analogy. This approach is called as hybrid approach. Numerical results compared with experimental work are already done in the previous publication. This work also shows new hybrid approach presented in detail to study any aeroacoustics problems early in the design phase of products.