MEASUREMENT OF FLOW RESISTIVITY USING COMPUTATIONAL FLUID DYNAMICS

Flow resistivity is one of the most important parameters used to describe the acoustic behavior of fibrous materials, as porosity is highly used in industrial context, this paper summarizes the simulation of finding the flow resistivity using computational fluid dynamics and minimizing the error between calculated and measured resistivity. The estimation is made by taking Polyurethane Foam as sample fibrous material and varying porosity from 0.70 up to 0.98. The CFD tool analyzes and computes different pressure value respectively. Flow resistivity is further verified using experimental execution in which flow resistivity is measured from pressure measurement on a sample of porous material