By applying the third way the noise of the mouth of
residual flow from the workpiece can be removed and
the contact of residual AWJ with water surface in the
catcher tank as a source of the acoustic pressure level,
whereas residual kinetic energy is being absorbed in the
water tank and do not create a noise (Figure 6c). By this
application we will reach the most advantageous results
at decreasing the final level of the acoustic pressure by
technical measure