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Updated: Jan 17, 2026

Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
Published on: September 17, 2021
MD Simulations of Acetylene, Ethylene, and Ethane Hydrates: Structural and Thermal Properties
Hakime Ghafari1, Hossein Mohammadi-Manesh1
1Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran.
Abstract:
This paper presents MD simulation results for acetylene, ethylene, and ethane hydrates, relevant to applications across various pressures and temperatures. The study examines structure I binary clathrate hydrates of C2H2 + CH4, C2H4 + CH4, and C2H6 + CH4, focusing on their structural properties, including isobaric thermal expansion, radial distribution functions, and isothermal compressibility. Lattice parameters and their temperature and pressure dependencies were calculated using SPC/E, TIP4P/ice, TIP4P/2005, and TIP4PQ/2005 water models. Simulations with TIP4PQ/2005, incorporating constant and variable corrections, closely matched experimental values at low temperatures. The thermal expansion results, particularly for TIP4PQ/2005, showed good agreement with previous experimental data.
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