The issue of acoustic emissions is common in all the applications that work with fluids and cannot exceed prescribed noise limits.
Common examples of applications are pipelines for oil&gas and industrial plants, in particular when gases are the flowing fluids. Noise is typically produced by the fluctuating quantities generated by the kinetic energy dissipation of vortexes and turbulence after the flow passes a singularity, such as valves and orifices. The analysis of noise emission problems is related with the identification of the source region, the downstream transport, the interaction between the flow and the structure geometry and the external propagation through the walls. Control devices are usually the main source of noise and a correct design is fundamental to immediately reduce noise emissions at the origins and to avoid acoustic insulation expenses.
Our activities are focused on the development of methodologies and good practices for noise prediction and reduction through experimental and numerical research according to the international standards.