Angie Sarkissian
Naval Res. Lab., Washington, DC 20375-5000
The normal component of the acoustic intensity on the surface of a
radiating structure is reconstructed from pressure values over a limited region
of space. The small measurement surface that is located very close to the
structure enables a high resolution reconstruction of the surface pressure and
the surface normal velocity over a small region on the structure surface
located just below the measurement surface, from which the normal component of
the acoustic intensity is computed. The reconstructed intensity in the region
below the measurement surface compares favorably to the intensity reconstructed
from a measurement surface surrounding the entire structure. The algorithm is
developed by applying the boundary-element method to compute operators relating
the surface pressure and the measured pressure to the surface normal velocity
with the