Mathematical Center in Akademgorodok invites you to participate in the online seminar "Actual Problems of Applied Mathematics" on April 24, 18:00 Novosibirsk time (GMT+7).
Seminar chairs: I.A. Taimanov, S.I. Kabanikhin, A.E. Mironov, M.A. Shislenin.
Seminar Secretary: N.M. Prokhoshin
Problems of modeling natural and anthropogenic processes in the Arctic zone of the Russian Federation
By
I.B. Petrov, Corresponding Member of RAS, Doctor of Physical and Mathematical Sciences, Head of the Department of Informatics, MIPT
We will discuss problems arising in the development of the Arctic zone of the Russian Federation, their statement and problems arising from their numerical solution. A description of the relevant computational problems associated with the development of the North is given: seismic exploration tasks, safety of offshore structures (stationary and floating), wave propagation in heterogeneous geological environments, strength of ice structures, research of the mechanical properties of ice. For a numerical solution, a class of grid-characteristic methods is used that takes into account the characteristic properties of equations of hyperbolic type. For the physical modeling of the processes under consideration, a system of dynamic equations of the mechanics of continuous media in partial derivatives is used, in particular, the equations of mechanics of a deformable body of acoustics.
Modeling the propagation of dynamic wave disturbances in heterogeneous media on high-performance computing systems
By
N.I. Khokhlov, Ph.D., Senior Researcher, Deputy Head of the Laboratory of Applied Computational Geophysics, MIPT
The work is devoted to the development of higher accuracy numerical methods and a software package for mathematical modeling of dynamic wave disturbances as applied to seismic, seismic exploration, geophysics, strength problems, and non-destructive testing problems. The main features of the developed methods are high accuracy and the explicit identification of inhomogeneities in the media. The dimensions of the computational domains in real geophysical problems reach tens of kilometers, while the size of heterogeneities can be few meters or less. In such long-time problems, the use of high-precision numerical methods is required to correctly describe the propagation of dynamic wave disturbances in a three-dimensional elastic formulation over long distances. Part of the work is devoted to the development of such methods.
To participate in the seminar, you must connect to the conference in Zoom at on April 24 after 17:45 Novosibirsk time (GMT+7).
Conference ID: 979 929 59134.
Please pay attention to the following rules for holding an online seminar:
- To prevent the appearance of spambots, security measures will be increased and the waiting room will be turned on, so it is advisable to enter under your first name and surname.
-
For the duration of the report, please turn off the microphone.
- For the convenience of the speaker, it is recommended to post questions in advance in the chat.
