4 pagesInternational audienceThe detailed investigation of the aerodynamical noise inside a vehicle calls for a good knowledge of the various components of the wall pressure field produced by the external flow. Experimental measures give access to the superposition of the acoustic and turbulent advected fields. We propose a method to simulate random fields that reproduce the essential statistical properties (distribution, spatio-temporal correlations) of acoustic and advected pressure fields separately. The simulations are using a spectral synthesis based on the usual empirical spatio-temporal correlation models of the literature. The resulting random fields are numerically low-cost and quite well reproduce the properties of measured signals. We simulate the result of a measure by an antenna of sensors. These simulations will permit to study the measurement device as far as spectral aliasing and components separation are concerned
