scholarly journals Albedo of the planet as an indicator of the evolution of the Earth's climate (The 65th anniversary of the Keldysh Institute of Applied Mathematics and the achievements of the 'Lunar Program' is dedicated)

2018 ◽  
pp. 1-28 ◽  
Author(s):  
Tamara Alexeevna Sushkevich ◽  
Sergey Alexsandrovich Strelkov ◽  
Svetlana Victorovna Maksakova
Keyword(s):  
Applied Mathematics ◽  
Keldysh Institute ◽  
65Th Anniversary ◽  
Earth’S Climate

scholarly journals Interaction analysis of two streamwise supersonic vortices by visualization methods

2021 ◽  
Author(s):  
Vitaly Evgenyevich Borisov ◽  
Alexandr Alexandrovich Davydov ◽  
Tatiana Vitalievna Kostantinovskaya ◽  
Alexander Evgenievich Lutsky
Keyword(s):  
Turbulent Flows ◽  
High Performance ◽  
Interaction Analysis ◽  
Applied Mathematics ◽  
Numerical Data ◽  
Attack Angle ◽  
Keldysh Institute ◽  
Computing Systems ◽  
Trailing Edges ◽  
Performance Computing

In this paper we present an analysis and comparison of two streamwise supersonic vortices interaction with using the methods of maximum vorticity and the ?2-criterion. Mach number of incoming flow was M? = 3. A pair of vortices was generated by two coaxial straight wings with sharp leading, tip and trailing edges. Two configurations are considered: a pair of counter-rotating vortices and a pair of co-rotating vortices. In the case of counterrotating vortices the wings attack angle was 10 degrees. In the case of co-rotating vortices the attack angle of one of the wings was 10 degrees, the attack angle of other one was -10 degrees. Numerical data were obtained in the domain of 10 wing chords downstream from a wings axis by a computational model based on the URANS equations with SA turbulence model. Numerical simulations were performed on the hybrid supercomputing system K-60 at the Keldysh Institute of Applied Mathematics RAS using the developed software package ARES for 3D turbulent flows modeling on high performance computing systems. The main simulation was performed on 224 cores. The simulations were carried out on unstructured grids with hexagonal cells.

S.K. Godunov and Kinetic Theory at the Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences

2020 ◽  
Vol 60 (4) ◽  
pp. 610-614
Author(s):  
S. Z. Adzhiiev ◽  
Ya. G. Batishcheva ◽  
V. V. Vedenyapin ◽  
Yu. A. Volkov ◽  
V. V. Kazantseva ◽  
...  
Keyword(s):  
Kinetic Theory ◽  
Applied Mathematics ◽  
Keldysh Institute ◽  
Russian Academy Of Sciences ◽  
Academy Of Sciences

scholarly journals Prevention of NEO hazard: the Russian approach

2021 ◽  
Vol 30 (1) ◽  
pp. 56-61
Author(s):  
Elena Pavlova ◽  
Viktor Voropaev
Keyword(s):  
Statistical Data ◽  
Applied Mathematics ◽  
Outer Space ◽  
Minor Planets ◽  
Keldysh Institute ◽  
Current State ◽  
Academy Of Sciences ◽  
Space Activities ◽  
Goals And Objectives ◽  
Optical Telescopes

Abstract Russian Academy of Sciences (RAS) is actively working to solve the problem of preventing Near-Earth Object (NEO) hazard. The article provides the goals and objectives of preventing NEO hazard, as well as ways to achieve them. The described ways of achieving the goal are applied in RAS best. The current state and prospects of the Russian contribution to the prevention of NEO hazard are considered. Statistical data on the dynamics of observation of minor planets by Russian telescopes is presented. The structure of the NEO part of hazardous situations classifier developed by Keldysh Institute of Applied Mathematics (KIAM RAS) and structure of perspective National System Security of space activities in outer space are presented, including the system’s response to event classified as dangerous. The article is accompanied by illustrations of potentially hazardous objects in the sky, made by telescopes of the International Network of Optical Telescopes (ISON), coordinated by the KIAM RAS.

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