Aeroacoustics
Aircraft Engine Studies: Modelling next generation CROR aircraft
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.....
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Aircraft Engine Studies: Development of a whole-aicraft noise model
We develop an advanced computer program to estimate aircraft noise, both far-field radiation and scattering on fuselage.....
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Aircraft Engine Studies: Efficient computation of sound radiation on adaptively refined mesh
A new computational tool was developed to efficiently predict sound radiation with block-structured adaptive mesh refinement (AMR) algorithm.....
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Aircraft Engine Studies: Modelling of aircraft sound propagation
A 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 d....
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Stable time-domain LEE simulations
Linearized 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 instabiliti....
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Anisotropic filter for synthetic turbulence
A 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 an....
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