Modelling of the ultrasonic field by the angular spectrum method in presence of interface
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Updated: Sep 30, 2026

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
Published on: August 21, 2018
D Belgroune1, J F de Belleval, H Djelouah
1Laboratoire de Physique des Matériaux, Faculté des Sciences-Physique, U.S.T.H.B., Alger, Algeria. m.naima@voila.fr
Abstract:
We present a numerical modelling of the harmonic sound in two isotropic media, one liquid and the other solid separated by a plane interface. This numerical modelling is carried out by the angular spectrum method. This latter is applied to calculate the displacement potential generated by a rectangular transducer with a Gaussian profile and with an uniform profile. The rigorous modelling of the field needed to find the optimal parameters of the decomposition according to the transducer aperture and the ultrasonic wave frequency.
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