TY - JOUR

T1 - Shock-induced Mesoparticles and Turbulence Occurrence

AU - Khantuleva, Tatiana A.

AU - Meshcheryakov, Yurii I.

N1 - Khantuleva, T.A.; Meshcheryakov, Y.I. Shock-Induced Mesoparticles and Turbulence Occurrence. Particles 2022, 5, 407–426. https://doi.org/10.3390/particles5030032

PY - 2022/9/16

Y1 - 2022/9/16

N2 - Development of the new approach to describe turbulent motions in condensed matter on the basis of nonlocal modeling highly non-equilibrium processes in open systems is performed in parallel with experimental studying the mesostructure in dynamically deformed solids. The shock-induced mesostructure formation inside the propagating waveform registered in real time allows the transient stages of non-equilibrium processes to be qualitative and quantitative re-vealed. The new nonlocal approach developed on the basis of the nonlocal and retarded transport equations obtained within the non-equilibrium statistical physics is used to describe the occur-rence of turbulence. Within the approach, the reason for the transition to turbulence is that the non-equilibrium spatiotemporal correlation function generates the dynamic structures in the form of finite-size clusters on the mesoscale with almost identical values of macroscopic densities mov-ing as almost solid particles that can interact and rotate. The mesoparticles obtained as a result of the fragmentation of spatiotemporal correlations upon impact, move at different speeds in a me-dium with dispersion like wave packets. The movements recorded simultaneously at two scale levels indicate the energy exchange between them. Its description required a redefinition of the concept of energy far from local thermodynamic equilibrium. Experimental results show that the irreversible part of the dynamic mesostructure remains frozen into material as new defects.

AB - Development of the new approach to describe turbulent motions in condensed matter on the basis of nonlocal modeling highly non-equilibrium processes in open systems is performed in parallel with experimental studying the mesostructure in dynamically deformed solids. The shock-induced mesostructure formation inside the propagating waveform registered in real time allows the transient stages of non-equilibrium processes to be qualitative and quantitative re-vealed. The new nonlocal approach developed on the basis of the nonlocal and retarded transport equations obtained within the non-equilibrium statistical physics is used to describe the occur-rence of turbulence. Within the approach, the reason for the transition to turbulence is that the non-equilibrium spatiotemporal correlation function generates the dynamic structures in the form of finite-size clusters on the mesoscale with almost identical values of macroscopic densities mov-ing as almost solid particles that can interact and rotate. The mesoparticles obtained as a result of the fragmentation of spatiotemporal correlations upon impact, move at different speeds in a me-dium with dispersion like wave packets. The movements recorded simultaneously at two scale levels indicate the energy exchange between them. Its description required a redefinition of the concept of energy far from local thermodynamic equilibrium. Experimental results show that the irreversible part of the dynamic mesostructure remains frozen into material as new defects.

KW - turbulence

KW - non-equilibrium correlation

KW - self-organization

KW - mesoparticle

KW - wave packet

KW - shock-induced waveform

UR - http://www.scopus.com/inward/record.url?scp=85138611070&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/999215bb-fe4e-3be4-8471-ea0c0a5d3350/

U2 - 10.3390/particles5030032

DO - 10.3390/particles5030032

M3 - Article

VL - 5

SP - 407

EP - 425

JO - Particles

JF - Particles

SN - 2571-712X

IS - 3

ER -