Contra-rotating open rotors (CRORs) show promise for use in future aircraft propulsion systems, but suffer from high noise emissions. Both tonal and broadband noise emissions are produced by CRORs.
View researchWe develop an advanced computer program to estimate aircraft noise, both far-field radiation and scattering on fuselage.
View researchA new computational tool was developed to efficiently predict sound radiation with block-structured adaptive mesh refinement (AMR) algorithm.
View researchA suite of high-order, time-domain computational aeroacoustic programs have been developed to model sound propagation and radiation from airframe components and aero engine intake and bypass/exhaust ducts.
View researchLinearized Euler equations (LEE) are often used in a CAA simulation, with a strong mean-velocity gradient, numerical Kelvin-Helmholtz (K-H) instabilities may appear using the LEE. Vortical instabilities can grow exponen…
View researchA technique of synthetic turbulence is proposed by developing a general form of anisotropic filter, which can realize the desired velocity spectra of three-dimensional anisotropic turbulence. The anisotropic filter ca…
View research
