Behavior of the turbulized mixtures at the stage of
their inertial motion (with removed acceleration) has
been studied. Turbulized mixtures were obtained at the
contact boundary of two different density fluids as a result
of the Rayleigh–Taylor instability (RTI) development.
At some instant of time t*, the acceleration sign
was changed and conditions for the mixture separation were
created. Then at the instant of time t**, the acceleration
was removed and the turbulized mixture continued to move
under force of inertia. Experiments have been performed
at the installations EKAP and SOM. At the stage of inertial
motion, the average density distribution of substance in
the mixture region and the width of the turbulized mixture
region have been obtained. The data on the mixture region
expansion at the stage of inertial motion have been obtained
as well.