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14 Result(s)

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  1. No Access

    Article

    Boundary Layer Dynamics in a Compressible Gas. Numerical Simulation

    A theoretical analysis of laminar-turbulent transition in supersonic gas flow is performed basing on the results of direct numerical simulation of flow around a flat plate within the framework of Navier—Stokes...

    V. A. Zharov, R. Ya. Tugazakov in Fluid Dynamics (2022)

  2. No Access

    Article

    MECHANISM OF BURSTING FORMATION IN A SUPERSONIC GAS FLOW PAST A NARROW FLAT PLATE

    Theoretical results obtained within the framework of the weakly nonlinear model of a developed boundary layer in a flow past a narrow flat plate are verified with the use of methods of direct numerical simulat...

    I. I. Lipatov, R. Ya. Tugazakov in Journal of Applied Mechanics and Technical Physics (2022)

  3. No Access

    Article

    Three-dimensional Тurbulent Supersonic Flow over a Plate

    The process of laminar-turbulent transition in a boundary layer is studied in terms of vortex evolution, from the growth of weak external disturbances to the formation of intense waves resulting in the develop...

    R. Ya. Tugazakov in Fluid Dynamics (2019)

  4. No Access

    Article

    Nonlinear Instability in the Region of Laminar-Turbulent Transition in Supersonic Three-Dimensional Flow over a Flat Plate

    Direct numerical simulation is applied to obtain laminar-turbulent transition in supersonic flow over a flat plate. It is shown that, due to the nonlinear instability, Tollmien–Schlichting waves generated in t...

    I. I. Lipatov, R. Ya. Tugazakov in Fluid Dynamics (2018)

  5. No Access

    Article

    On the theory of supersonic inviscid flow separation in gasdynamic problems

    A general schematic flow representation that explains the mechanism of inviscid gas separation in time-dependent and three-dimensional gas flows is presented. The scenario of gas flow separation from a body su...

    R. Ya. Tugazakov in Fluid Dynamics (2016)

  6. No Access

    Article

    Generation of coherent structures in supersonic flow past a finite-span flat plate

    The formation of coherent structures on a flat plate in a supersonic flow is numerically investigated both in the case of strong shock incidence on the plate and in the problem of oncoming harmonic waves havin...

    I. I. Lipatov, R. Ya. Tugazakov in Fluid Dynamics (2015)

  7. No Access

    Article

    Mechanism of transverse structure formation in supersonic flow past a body

    Direct numerical simulation within the framework of the Navier-Stokes equations is applied to study the mechanism of the generation of transverse structures (streamwise vortices) in the problem of supersonic M...

    I. I. Lipatov, R. Ya. Tugazakov in Fluid Dynamics (2014)

  8. No Access

    Article

    Theory of unsteady separation in supersonic flow around a convex corner

    A theory of unsteady separation in inviscid supersonic flow around a convex corner is developed. Within the framework of the hypothesis suggested the mechanism of separationless-to-separated flow transition is...

    R. Ya. Tugazakov in Fluid Dynamics (2007)

  9. No Access

    Article

    Supersonic Flow Past a Bent Delta Wing and Its Aerodynamic Characteristics

    The supersonic flow past a bent delta wing and its aerodynamic characteristics, both local and integral, are studied using approximate analytic estimates and numerical calculations. The flow regimes with the s...

    V. N. Golubkin, G. N. Dudin, R. Ya. Tugazakov in Fluid Dynamics (2002)

  10. No Access

    Article

    Investigation of the problem of the decay of an arbitrary two-dimensional discontinuity

    The problem of the decay of an arbitrary two-dimensional discontinuity in a gas has been investigated analytically and numerically. When the boundary of the original discontinuity is a straight line with a bre...

    R. Ya. Tugazakov in Fluid Dynamics (1989)

  11. No Access

    Article

    Shock strengthening in a wedge-shaped cavity

    The unsteady problem of the entry of a shock wave of arbitrary intensity into a wedge-shaped cavity is examined. An exact solution of the non-linear problem of reflection of a plane wave from a nonplanar wall ...

    R. Ya. Tugazakov in Fluid Dynamics (1987)

  12. No Access

    Article

    An exact solution for the interaction of a supersonic wedge with the boundary between two gases

    R. Ya. Tugazakov in Journal of Applied Mechanics and Technical Physics (1983)

  13. No Access

    Article

    Problem of the interaction of a wedge moving with supersonic velocity when it encounters an interface between two gases

    A class of exact solutions is constructed for the problem of the interaction of a supersonic wedge when it encounters an interface between two gases. It is shown that the realization of these solutions require...

    R. Ya. Tugazakov in Fluid Dynamics (1983)

  14. No Access

    Article

    Initial stage of the collision of blast waves

    The collision of two blast waves is analyzed for the case of variable parameters of the gas behind the wave front and wave reflection at a plane, a cylindrical, and a spherical obstacle. The reflection of a bl...

    R. Ya. Tugazakov, A. S. Fonarev in Fluid Dynamics (1971)