Numerical investigation of noise generation by rod-airfoil configuration using DES (SU2) and the FW-H analogy

Abstract

* the model, not the user, defines the regions where RANS and LES modes are active † the user specifies the RANS to LES transition region through a synthetic turbulence interface

Effect of geometric parameters on the noise generated by rod-airfoil configuration

“…In general, this demonstrates that, as shown earlier by Greschner et al [15], the 3D-DDES findings are consistent with the experimental data. The rod wake turbulence due to its high intensity and length scale determines the velocity profiles on the airfoil rather than the boundary layer development [46]. It is not surprising that a purely 2D simulation result differs sig-0 0.04 0.08 0.14 nificantly from measurements.…”

A hybrid computational aeroacoustic model with application to turbulent flows over foil and bluff bodies

“…The rod-foil interaction case has been considered by a number of researchers, both experimentally [37,38] and numerically [39,40], and it represents a good challenge for the hybrid model, both in terms of the fluid dynamics and the acoustics. It is designed to represent a simplified case of a rotor downstream of a stator, a common configuration in turbo-machinery applications.…”