The study of the origin of turbulence and determinate structures in
supersonic boundary layer flows.
Basic Research Activities
Theoretical and experimental study of nonlinear evolution of
disturbances in supersonic boundary layer.
A nonlinear asymmetric resonance wave triplet in the boundary has
been found and studied for M=2.0. The asymmetry is connected with the
predominance of an oblique wave of harmonic pumping. The detuning of resonance
in the main flow parameters is small.
Theoretical and experimental study of excitation of disturbances in
the boundary layer on a flat plate by an external acoustic field, the problem of
receptivity of supersonic boundary layer to unsteady external actions.
The greatest effect of excitation of disturbances in the boundary
layer is observed for oblique acoustic waves, which are oblique with respect to
the leading edge of the model and whose wave vectors are parallel to the model
surface (longitudinal acoustic waves).
The study of three-dimensional boundary layer.
Periodic unsteady structures along the leading edge of a swept wing
have been found.
The study of unsteady phenomena in jets and wakes, microstuctures of
disturbances in subsonic boundary layer.
The results obtained can be used for obtaining a flow with prescribed
properties (for decreasing the drag and heat flux on the surfaces of flying
- RUSSIA: TsAGI, Moscow Physical-Technical Institute (Moscow
- USA: NASA, BOEING;
- GERMANY: Stuttgart University.
Head of the Laboratory
Kosinov Alexander Dmitrievich
tel.: (383) 330-12-28