171st meeting of the seminar
«Mathematical modeling of geophysical processes: direct and inverse problems»
The seminar is devoted to the consideration of various aspects of mathematical modeling of physical processes in the atmosphere, hydrosphere and active layer of land, associated with solving problems arising in the study of the problems of climate change and the natural environment.
Seminar Organizing Committee
Leaders: |
Doctor of Physics and Mathematics A.V. Glazunov (Marchuk Institute of Numerical Mathematics of RAS) Doctor of Physics and Mathematics I.A. Repina (A.M. Obukhov Institute of Atmospheric Physics of RA) Doctor of Physics and Mathematics V.M. Stepanenko (RCC MSU, Geographical Faculty of Moscow State University) |
Secretary: |
A.V. Debolsky (RCC MSU, A.M. Obukhov Institute of Atmospheric Physics of RAS). |
PROGRAM
17:15
A.V. Glazunov | INM RAS; RCC MSU |
E.V. Mortikov | RCC MSU; INM RAS |
A.V. Debolsky | RCC MSU, A.M. Obukhov Institute of Atmospheric Physics of RAS |
Numerical modeling of turbulence in an urban environment in the presence of vegetation.
The dynamics of turbulent flows in the urban environment in the presence of vegetation was investigated using the LES model of the INM RAS. A series of calculations was carried out over urban surfaces with simplified geometry. Objects (“buildings”) were defined explicitly and the influence of vegetation (“trees”) on turbulent flow was taken into account parametrically. On the basis of statistical analysis of calculation results, characteristic regularities of vegetation influence on turbulent length scales, turbulent kinetic energy balance in the urban layer and aerodynamic drag force of objects were revealed. A new approach to the calculation of drag force in the presence of vegetation is proposed. The results of the data analysis are considered from the point of view of the prospects of parameterization of the detected effects in multilayer RANS models of the urban layer.
The seminar also will be held in the form of a webinar on the Zoom platform.
Topic: семинар "Математическое моделирование геофизических процессов: прямые и обратные задачи".
Time: Oct 24, 2024 05:15 PM Moscow (GMT+3)
Meeting ID: 830 1322 3995
Passcode: 103356
Video recordings of the seminar are available on our youtube channel.
For communication on all issues related to the work of the seminar, please contact the academic secretary Andrey Vladimirovich Debolsky at and.debol@srcc.msu.ru