Effects of Particle Migration on the Relaxation of Shock Wave Collisions
The non-equilibrium characteristics during the shock relaxation process hold a foundational position in various fields. In contrast to the propagation of a single shock wave, the collision process of two shock waves exhibits distinct non-equilibrium features. Employing non-equilibrium molecular dynamics, we simulated the collision of ultra-strong shock waves in a classical gas system, investigating the relationship between equilibrium relaxation time and shock intensity. Tracking the spatial migration of microscopic particles in the shock collision region during the relaxation process, we observed a significant contribution of particle migration to the average energy changes during relaxation. The discussion on particle migration provides a valuable new perspective for understanding the microscopic mechanisms of the relaxation process.
Authors
- Zixiang Yan (ORCID: https://orcid.org/0000-0002-9076-3671)
- Chongjie Mo (ORCID: https://orcid.org/0000-0002-3294-8395)
- Quanxi Xue
- Xiazi Xiao (ORCID: https://orcid.org/0000-0001-5852-2387)
- Xinyu Zhang (ORCID: https://orcid.org/0000-0001-8716-3213)
- Hao Liu (ORCID: https://orcid.org/0000-0002-7405-1578)
- Bo Xu (ORCID: https://orcid.org/0009-0001-5241-5254)
- Hao Li (ORCID: https://orcid.org/0009-0009-1746-9597)
Institutions
- Central South University (CN)
- Beijing University of Posts and Telecommunications (CN)
- Hunan University (CN)
- Peking University (CN)
- Beijing Computational Science Research Center (CN)
- Northwest Institute of Nuclear Technology (CN)
Publication Details
- Journal
- Entropy
- Published
- 2024-08-25
- DOI
- https://doi.org/10.3390/e26090724
- Primary Topic
- Gas Dynamics and Kinetic Theory
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- State Key Laboratory of Laser Interaction with Matter
- Fundamental Research Funds for the Central Universities