Prediction of flow-induced noise using the expansion about incompressible flow approach

In the present paper an Expansion about Incompressible Flow approach, as suggested by Shen and Sørensen1, will be used and discussed for the simulation of flow-induced sound at low Mach numbers. The method consists of two parts: First solving for the incompressible, viscous flow field, and second computing the fluctuating acoustic field. As a...

Force scheme applied to flux reconstruction in the numerical simulation of nonlinear acoustic problems

Nonlinear acoustic waves have many applications in very different fields of industry. The problem considered in this work consists of predicting the behaviour of gas filling a one dimensional tube when suffering the action of very high frequency waves. The numerical technique applied to solve this problem is a third order finite volume method...

Numerical solution of nonlinear acoustic wave problems employing a green's function approach

The design of phased array transducers for medical diagnostic ultrasound asks for an understanding of the nonlinear propagation of acoustic wavefields. Most existing numerical models are based on the linearized model equations, but in the recent decades several numerical models have been developed that incorporate weak nonlinear propagation as...