3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-881-C5-884
Diffraction par un corps élancé en mouvementM. TRAN VAN NHIEU
Thomson Sintra Uwa, 1 Avenue Aristide Briand, 94117 Arcueil, France
Application of the so-called slender-body approximation to calculate the field scattered by a uniformly moving slender-body of revolution insonified by a co-moving point source in free space. By using a linear transformation of coordinates analogous to a Lorentz transformation, the transformed problem is similar the stationary case except for the boundary condition on the body surface which is modified by the source and target motions. An approximate solution to the velocity potential is derived by applying the matched asymptotic expansions method. From a geometrical analysis of the previous results, a general solution is proposed for low subsonic motions at low frequency.
© EDP Sciences 1994