Complex modelling of the Tunguska catastrophe

Korobeinikov, V. P.; Shurshalov, L. V.; Власов, В. И.; Semenov, I. V.

doi:10.1016/s0032-0633(97)00083-4

Cited by 23 publications

(11 citation statements)

References 6 publications

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“…8. It is to be noted that this result is in a good correspondence with the observation data for the Tunguska meteorite [16,21,24].…”

Section: Results Of Numerical Simulationsupporting

confidence: 88%

“…It is the main characteristics determining the forest flattening. According to reference [21] the value of the dynamical pressure 8 Â 10 2 Pa corresponds to the fall of about 5 per cent of all the trees. Then, one obtains that the forest can strongly be damaged in the region with the characteristic size of about 2 Â 10 4 m, as shown in Fig.…”

Section: Results Of Numerical Simulationmentioning

confidence: 99%

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An adaptive moving mesh method with application to non-stationary hypersonic flows in the atmosphere

Utyuzhnikov¹,

Rudenko

2008

Proceedings of the Institution of Mechanical Engineers, Part G:

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A numerical algorithm based on a shock-capturing scheme on adaptive moving meshes is described. Three-dimensional dynamical adaptive meshes are generated as the result of solving a variational problem. The governing equations are solved in a moving coordinate system therefore the method does not require any interpolation of the solution from one mesh onto another one. The developed algorithm can efficiently be used for the simulation of non-stationary supersonic flows in the atmosphere. As an example, it is applied to the study of the Tunguska meteorite hypersonic impact. For the first time this problem is modelled from the entrance moment up to the interaction with the Earth atmosphere in a three-dimensional formulation. A reasonable correspondence with the data of the observations is obtained. The implementation of the developed numerical algorithm reduces the computational time by the factor of four.

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“…8. It is to be noted that this result is in a good correspondence with the observation data for the Tunguska meteorite [16,21,24].…”

Section: Results Of Numerical Simulationsupporting

confidence: 88%

Section: Results Of Numerical Simulationmentioning

confidence: 99%

An adaptive moving mesh method with application to non-stationary hypersonic flows in the atmosphere

Utyuzhnikov¹,

Rudenko

2008

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…There were numerous efforts to infer the total energy of the Tunguska event and the type of the Tunguska body from the observed damage in Siberia using numerical models (Boslough and Crawford 1997;Korobeinikov et al 1998;Shuvalov and Artemieva 2002;Artemieva and Shuvalov 2007). In our set of airburst scenarios, a few produce damage similar to that observed.…”

Section: Tunguska Eventmentioning

confidence: 99%

Atmospheric shock waves after impacts of cosmic bodies up to 1000 m in diameter

Artemieva

Шувалов

2018

Meteorit & Planetary Scien

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The results of numerical modeling of meteoroids' interaction with Earth's atmosphere are presented. We model the entry in two dimensions and then interpolate the results into a 3‐D model to calculate interaction of shock waves with the surface. Maximum shock pressures, wind speeds, and areas subjected to substantial overpressure are calculated for oblique impacts of asteroids and comets. We show that vertical impacts produce a smaller damage zone on the surface than oblique ones. Damage caused by shock waves covers an order of magnitude larger area than any other hazardous effects. The function of energy release in the atmosphere, which is traditionally used in meteoritics, has a limited application if cosmic bodies are larger than tens of meters in diameter: at each time moment energy is smoothed along a substantial length of the trajectory; both emitted radiation (routinely used for calibration of semi‐analytical models) and shock wave amplitude are complex functions of temperature–density distributions in atmosphere.

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“…4. Распределение теплового потока поперек алюминиевой пластины на участке воздействия высокоэнергетического импульса (a), ее термоупругопластическое деформирование и разрушение (b): поле скоростей в тот же момент времени, что и тепловой поток Механизмы разрушения движущихся в плотной атмосфере метеороидов под действием больших градиентов нормальных и сдвиговых напряжений могут быть самыми разнообразными [Коробейников и др., 1997;Korobeinikov et al, 1998;Тирский, 2000;Stulov, 2008] и др. В качестве примера (хотя и довольно далекого от рассматриваемой здесь ситуации) на рисунке 4 приведены результаты расчетов деформирования и разрушения участка металлической пластины из алюминия от воздействия мощного энергетического импульса (данные из [Коротин и др., 1989; Иванов и др., 1990]).…”

Section: компьютерные исследования и моделированиеunclassified

About the Evolution of Perturbations Caused by the Movement of Meteoroids in the Earths Atmosphere

Холодов¹

2013

CRM

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Complex modelling of the Tunguska catastrophe

Cited by 23 publications

References 6 publications

An adaptive moving mesh method with application to non-stationary hypersonic flows in the atmosphere

An adaptive moving mesh method with application to non-stationary hypersonic flows in the atmosphere

Atmospheric shock waves after impacts of cosmic bodies up to 1000 m in diameter

About the Evolution of Perturbations Caused by the Movement of Meteoroids in the Earths Atmosphere

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