Computer Research and Modeling
 RUS  ENG JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB
 General information Latest issue Archive Search papers Search references RSS Latest issue Current issues Archive issues What is RSS

 Computer Research and Modeling: Year: Volume: Issue: Page: Find

 Computer Research and Modeling, 2019, Volume 11, Issue 4, Pages 593–612 (Mi crm731)

MODELS IN PHYSICS AND TECHNOLOGY

Modeling the flight of meteoroid fragments with accounting for rotation

V. T. Lukashenko, F. A. Maximov

Institute for Computer Aided Design, 19/18 2nd Brestskaya st., Moscow, 123056, Russia

Abstract: An algorithm for solving the conjugation of aerodynamic and ballistic problems, which is based on the method of modeling with the help of a grid system, has been complemented by a numerical mechanism that allows to take into account the relative movement and rotation of bodies relative to their centers of mass. For a given configuration of the bodies a problem of flow is solved by relaxation method. After that the state of the system is recalculated after a short amount of time. With the use of iteration it is possible to trace the dynamics of the system over a large period of time. The algorithm is implemented for research of flight of systems of bodies taking into account their relative position and rotation. The algorithm was tested on the problem of flow around a body with segmental-conical form. A good correlation of the results with experimental studies was shown. The algorithm is used to calculate the problem of the supersonic fight of a rotating body. For bodies of rectangular shape, imitating elongated fragments of a meteoroid, it is shown that for elongated bodies the aerodynamically more stable position is flight with a larger area across the direction of flight. This de facto leads to flight of bodies with the greatest possible aerodynamic resistance due to the maximum midship area. The algorithm is used to calculate the flight apart of two identical bodies of a rectangular shape, taking into account their rotation. Rotation leads to the fact that the bodies fly apart not only under the action of the pushing aerodynamic force but also the additional lateral force due to the acquisition of the angle of attack. The velocity of flight apart of two fragments with elongated shape of a meteoric body increases to three times with the account of rotation in comparison with the case, when it is assumed that the bodies do not rotate. The study was carried out in order to evaluate the influence of various factors on the velocity of fragmentation of the meteoric body after destruction in order to construct possible trajectories of fallen on earth meteorites. A developed algorithm for solving the conjugation of aerodynamic and ballistic problems, taking into account the relative movement and rotation of the bodies, can be used to solve technical problems, for example, to study the dynamics of separation of aircraft stages.

Keywords: modeling, meteoroid, aerodynamic characteristics, flight dynamics, fragmentation, interference, trajectory, rotation.

DOI: https://doi.org/10.20537/2076-7633-2019-11-4-593-612

Full text: PDF file (1004 kB)
Full text: http://crm.ics.org.ru/.../2822
References: PDF file   HTML file

UDC: 519.6+523.68
Revised: 14.06.2019
Accepted:02.07.2019

Citation: V. T. Lukashenko, F. A. Maximov, “Modeling the flight of meteoroid fragments with accounting for rotation”, Computer Research and Modeling, 11:4 (2019), 593–612

Citation in format AMSBIB
\Bibitem{LukMax19} \by V.~T.~Lukashenko, F.~A.~Maximov \paper Modeling the flight of meteoroid fragments with accounting for rotation \jour Computer Research and Modeling \yr 2019 \vol 11 \issue 4 \pages 593--612 \mathnet{http://mi.mathnet.ru/crm731} \crossref{https://doi.org/10.20537/2076-7633-2019-11-4-593-612} 

• http://mi.mathnet.ru/eng/crm731
• http://mi.mathnet.ru/eng/crm/v11/i4/p593

 SHARE:

Citing articles on Google Scholar: Russian citations, English citations
Related articles on Google Scholar: Russian articles, English articles

This publication is cited in the following articles:
1. A. V. Sosin, D. A. Sidorenko, P. S. Utkin, “Chislennoe issledovanie vzaimodeistviya udarnoi volny s podvizhnymi vraschayuschimisya telami slozhnoi formy”, Kompyuternye issledovaniya i modelirovanie, 13:3 (2021), 513–540
•  Number of views: This page: 122 Full text: 53 References: 7