New models and hydrocodes for shock wave processes in condensed matter

Some sections of the theory of shock-wave processes in condensed media require substantial refinement. From a detailed analysis of the concept of heat of reaction, it follows that the three known heats of reaction characterize the same transformation of the reacting medium from three different sides. When considering the flows of a reacting medium, it is necessary to take into account turbulence and its changes as an analogue of thermal motion and physicochemical transformations of matter. Based on the analysis of the results of a unique experiment, it was concluded that the deformation of the condensed medium is a factor that determines the reaction rate along with temperature.

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Current Models of Dynamic Deformation and Fracture of Condensed Matter

Materials Science Forum ◽

10.4028/www.scientific.net/msf.767.101 ◽

2013 ◽

Vol 767 ◽

pp. 101-108 ◽

Cited By ~ 2

Author(s):

L.A. Merzhievsky

Keyword(s):

Shock Wave ◽

Molecular Dynamics ◽

Continuous Medium ◽

Multilevel Models ◽

Dynamic Deformation ◽

Condensed Matter ◽

Simple Test ◽

Wave Processes ◽

Macroscopic Models ◽

Deformation And Fracture

The main types (groups) of models of deformation and the fracture, used for the solution of problems of dynamic and shock wave deformation of materials, are considered. All models are divided into three main groups: macroscopic (models of mechanics of continuous medium), microstructural (based on the description of evolutions of ensemble of defects ) and atomistic (are used in calculations by methods of molecular dynamics and quantum mechanics). The short characteristic of models of the listed groups is given. Some approaches to development of the most perspective multilevel models are described. The simple test for applicability of models for the description of shock and wave processes are offered. Approaches to the description of destruction of materials and used at this criterion are considered. The perspective directions of development of models of dynamic deformation and fracture are suggested.

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Modeling Shock Wave Processes in a Mine Opening with Permeable Barriers

Физико-технические проблемы разработки полезных ископаемых ◽

10.15372/ftprpi20190103 ◽

2019 ◽

Keyword(s):

Shock Wave ◽

Wave Processes ◽

Mine Opening ◽

Permeable Barriers

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1D GAS-DYNAMIC SIMULATION OF SHOCK-WAVE PROCESSES VIA INTERNET

10.1063/1.3295236 ◽

2009 ◽

Cited By ~ 3

Author(s):

K. V. Khishchenko ◽

P. R. Levashov ◽

M. E. Povarnitsyn ◽

A. S. Zakharenkov ◽

Mark Elert ◽

...

Keyword(s):

Shock Wave ◽

Dynamic Simulation ◽

Wave Processes ◽

Gas Dynamic

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Calculating shock-wave processes in bubbly liquids

Technical Physics ◽

10.1134/1.1259184 ◽

1998 ◽

Vol 43 (11) ◽

pp. 1280-1287 ◽

Cited By ~ 3

Author(s):

V. S. Surov

Keyword(s):

Shock Wave ◽

Wave Processes ◽

Bubbly Liquids

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On the mathematical model of combined rarefaction and compression waves in condensed matter

Mathematica Montisnigri ◽

10.20948/mathmontis-2021-50-9 ◽

2021 ◽

Vol 50 ◽

pp. 104-107

Author(s):

Alexander Alexandrovitch Samokhin ◽

Pavel Aleksandrovich Pivovarov

Keyword(s):

Shock Wave ◽

Rarefaction Wave ◽

Condensed Matter ◽

Steady State Regime ◽

Compression Waves ◽

Momentum Fluxes ◽

State Regime ◽

The Mathematical Model ◽

The Waves ◽

Nonmetal Transition

Two waves model where shock wave is combined with rarefaction wave appearing in laser ablation due to metal-nonmetal transition effect is investigated using conservation laws for mass and momentum fluxes for the steady-state regime of the process. This approach permits to obtain the relation between front velocities of the waves which shows that the rarefaction wave can be rather slow compared with the generated shock wave.

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