Welcome to the regular seminars on current research topics in computational mechanics!

Presentations are given by invited lecturers from Skoltech as well as from outside to introduce students to current trends and advances in diverse areas of modern fluid and solid mechanics, applied mathematics, computational science, and industrial applications of mechanics. Students have the opportunity to learn from and interact with leading experts in computational mechanics and to enjoy exposure to cutting-edge topics and open problems in the field.

Speaker's report: 50 min.

Q&A: 10-15 min.

Seminars are held in English.

Lead Instructor: Aslan Kasimov, Associate Professor

Contacts: A.Kasimov@skoltech.ru

OCTOBER 29, 2:00 PM | NUMERICAL EXPERIMENT IN TURBULENCE

Location: B2-3006
Speaker: Svetlana Fortova, Dr. Sci., Institute of Computer Aided Design of the RAS, Professor at the Department of Computational Physics, MIPT

Seminar presentation

This lecture presents the main results on numerical modeling of turbulent flows, carried out under the guidance of academician O.M. Belotserkovsky. The lecture discusses several characteristic problems of turbulence theory. Using the example of free-shear spatial turbulence, the leading role of large vortices is shown and the process of the origin and development of the direct energy cascade by A.N. Kolmogorov is investigated. The development of the reverse energy cascade characteristic of vortex flows in two-dimensional turbulence is demonstrated by the example of a problem proposed by A.N. Kolmogorov (Kolmogorov's problem). For Kolmogorov-type flows that occur when the flow is pumped by an external force and the presence of bottom friction, the occurrence of several different flow regimes is shown: laminar, turbulent, and vortex. The following is an analysis of quasi-two-dimensional flows, often occurring in nature, such as cyclones and anticyclones, which occur under the influence of the Coriolis force. In conclusion, a numerical experiment is presented to study the effect of elastic (polymer) turbulence that occurs at very low Reynolds numbers in the presence of a polymer in the flow.