The numerical simulation of sound propagation for closed volumes

Abstract: This work contains the results of numerical simulation of sound waves propagation inside closed volumes. The calculations are based on 2D time-dependent Eyler equations system solution. Different types of boundary conditions are discussed.Note: Research direction:Mathematical modelling in actual problems of science and technic

On inverse problems of 3D time-dependent Navier-Stokes equations for free convection heat transfer

Abstract: The inverse problem of convection is discussed to retrieve the unknown parameters in boundary conditions using measured flow parameters in a set of points. The convection was described by the time-dependent 3D Navier-Stokes equations. Direct problem was solved by explicit finite volumes method. The numerical experiments confirmed the feasibility of source temperature and turn-on moment determination.Note: Research direction:Mathematical modelling in actual problems of science and technic

The possibility of time-dependent boundary conditions restoration by the inverse gas dynamics and heat transfer problem solution

Abstract: The problem of time-dependent boundary conditions (external flow parameters ) recovering is considered for viscous supersonic flow near the solid surface. The solution of such a type of inverse problems is based on known data of surface temperature measurements. The results of calculations confirm the feasibility to recover the set of boundary conditions for the problem of flow around cylinder.Note: Research direction:Mathematical problems and theory of numerical method

Numerical simulation of time-dependent heat and mass transfer for closed volumes

Abstract: Based on time-dependent 3D Navier-Stokes equations results of numerical simulation are presented for free convection problems.Note: Research direction:Mathematical modelling in actual problems of science and technic