Numerical Investigation of the Heavy-Gas Column Interface Evolution Induced by Rarefaction Waves
Year: 2026
Type: book-chapter
Abstract: Interactions between rarefaction waves of varying intensities and a heavy gas column are numerically investigated in the present work. Comparisons are made in terms of interface morphology, fluid mixing, and circulation generation. Numerical results indicate that the heavy gas column exhibits generally similar flow characteristics. However, distinct differences are observed in circulation deposition, aspect ratio evolution, and the degree of gas diffusion. All the cases are dominated by negative circulation, and the total circulation eventually approaches a nearly constant value. The effective volume ratio of the gas column is evaluated based on the one-dimensional gas-dynamic theory, showing good agreement with numerical results, and confirming the applicability of the theoretical model to the interface evolution of the heavy gas column.
DOI: 10.3233/atde260110
Authors: Weijie Zhang, Dongdong Li, Ben Guan, Ge Wang
Institutions: Harbin Engineering University, Shanghai Jiao Tong University
Language: English
Subfield: Applied Mathematics
Field: Mathematics
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7134257571