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Biography

Prof.  Mikhalchenko  Elena
Lomonosov Moscow State University,  Russia

Title: Numerical simulation of detonation and its application to Space propulsion

Abstract:

The phenomenon of detonation is a complex physical and chemical process. As a rule, this phenomenon is undesirable. But there are also areas in which detonation is desirable and necessary, for example, in the detonation engines development. Spacecrafts are incredibly complex mechanisms that combine knowledge from many scientific fields, including physics, chemistry, mathematics, mechanics, etc. At the moment, rocket engines use various mechanisms to control and monitor the combustion reaction so they can ensure the transfer of a multi-ton vehicle to orbit. In the case of a detonation engine, the detonation wave takes on most of the responsibilities in this regard. Compared to isobaric combustion in RAM engines, detonation allows for a more intense and rapid heat release in a relatively small combustion chamber. Detonation cycle has higher thermal efficiency than a constant pressure combustion engine. Therefore it is expected that high efficiency propulsion system is realizable by using detonation wave. Detonation engines currently being studied can be divided into two major sections. One is pulse detonation engine (PDE). The other is Rotating Detonation Engine (RDE). With rapid technological advances in propulsion technology, the gamut of aerospace propulsion is undergoing a sea change. Recently, a large number of works have appeared on the prospects of using detonation engines not only as the main propulsion system, but also modifications for various systems, such as an experimental research stand to study the possibility of use in the Spacecraft reaction control system.

The lecture presents computational models and software codes, which have been developed to conduct predictive numerical experiments in detonation combustion chambers with a rotating detonation wave. Combustion chambers fed by hydrogen-air and hydrocarbon mixtures were considered. The results of numerical simulation of processes in the combustion chamber of an engine with a continuous rotating detonation wave were obtained. The parameters influencing the occurrence of a rotating detonation wave and its stabilization are determined. Computational models and software codes have been developed to conduct predictive numerical experiments in detonation combustion chambers with pulsed detonation. The results of numerical simulation of several cycles of operation of a pulsed detonation combustion chamber were obtained. As a result, the detailed distribution of such characteristics as temperature, pressure, speed, concentrations of reagents, intensity of reactions, as well as traction force at all moments of calculation was determined.

Biography:

Professor Elena Mikhalchenko, Ph.D. Researcher of the Department of Computer Systems Scientific Research Institute for System Analysis of Russian Academy of Sciences. Lecturer at the Department of High-Performance Computing and Researcher of Wave Process Laboratory, Faculty of Mechanics and Mathematics of Lomonosov Moscow State University.

She has been engaged in basic research on combustion, detonation and DDT processes. She was involved in developing 13 projects from Russian Foundation for Basic Research (RFBR). She published more than 65 peer-reviewed papers and 100 conference communications in international and domestic journals and important academic conferences, 2 patents, 3 certificates of registration of rights to software. She is a member of the Combustion Institute (Int.). Winner of competition “UMNIK” in 2012 on the topic “Development of the gas-dynamic part of the software package for the problems of gas dynamics and combustion”. Since 2019, member of the International Combustion Institute. Awarded the G.A. Tyulin Medal of the Russian Cosmonautics Federation in 2022. She was awarded the Kurchatov Prize for the year 2023 in the field of Scientific research.

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