  A new computational approach for simulating the blood flow induced sound
generation and propagation in a stenosed artery with one-sided constriction was
investigated. This computational hemoacoustic method is based on mapping the
transient pressure (force) fluctuations on the vessel wall and solving for the
structural vibrations in frequency domain. These vibrations were detected as
sound on the epidermal surface. The current hydro vibroacoustic method employs
a two step, one way coupled approach for the sound generation in the flow
domain and its propagation through the tissue layers. The results were
validated by comparing with previous analytical and computational solutions. It
was found that the bruits (generated from the flow around the stenosis) are
related primarily to the time derivative of the integrated pressure force on
the arterial wall downstream of the stenosis. Advantages of the methods used in
the current study include: (a) capability of providing accurate solution with a
faster solution time; (b) accurately capturing the break frequency of the
velocity fluctuation measured on epidermal surface; (c) inclusion of the fluid
structure interaction between blood flow and the arterial wall.
