This paper deals with the use of the Ffowcs Williams–Hawkings equation for hydroacoustic
analysis of rotating blades, and the deep difference between the acoustic fields generated …

Experimental and numerical studies were conducted to investigate passive control of a
forward-curved centrifugal fan noise by employing the open-cell metal foam (OCMF). The …

In this paper, an acoustic pressure gradient formula capable of accounting for constant
uniform flow effects is suggested. Acoustic pressure gradient calculation is key for acoustic …

In this paper, high-speed impulsive noise radiated from helicopter rotors in hover and
forward flight is computed by using a convected FW-H equation in the frequency domain …

This paper presents two types of frequency-domain acoustic-velocity formulations for the
rotating thickness and loading sources. The acoustic-velocity components of the noise …

Acoustic and vortical disturbances in uniform mean flow bounded with solid surfaces are
investigated in this paper. A convective vector wave equation and a convection equation that …

This paper presents a frequency-domain formulation for predicting noise radiated from the
rotating thickness and loading sources in uniform subsonic inflow with arbitrary direction …

The computational cost of predicting sound radiated from rotating sources is mainly affected
by three parameters, ie, the number of frequencies, source points and field points. The key of …

This paper presents a frequency-domain method to compute noise radiated from the rotating
source and scattered by the surface, where both the acoustic pressure and acoustic velocity …

A new approach to accelerating the evaluation of monopole and dipole source integrals via
the fast multipole method (FMM) in the time domain for general three-dimensional (3-D) …