Investigation into the improved axial compressibility of a spinning non-ideal gas

Zhang, Yiwen; Su, Shilong; Xie, Shu-Bin; Zhou, Weimin; Líu, Hao

doi:10.1007/s11467-020-0962-8

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2021

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“…This raises the question of whether the unusual compressive feature derived from the ideal gas can still be suitable for a nonideal gas. In our previous theoretical work [ 14 ], we examined the axial compressibility of a spinning gas using a simple virial equation of states (EOS) and showed that the effect of rotation-induced compressibility increase exists in a spinning nonideal gas with a virial EOS. However, the virial form of EOS can only simply consider the repulsive interactions between gas molecules.…”

Section: Introductionmentioning

confidence: 99%

Increase in Axial Compressibility in a Spinning Van der Waals Gas

Liu

Líu

et al. 2021

Entropy

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We investigated the adiabatic compression along the axial direction of a spinning Van der Waals gas by applying theoretical analysis and molecular dynamics (MD) simulations. Based on the analytical results, the rotation-induced compressibility increase effect is significant in a Van der Waals gas, while the attraction term in the Van der Waals equation of states (EOS) contributes significantly to the compressibility increase in a spinning system. We conducted MD simulations to the axial compression of a spinning gas, whose state is far from the ideal gas state, and further demonstrated that the rotation-induced compressibility increase effect in a dense state is robust, implying that such a phenomenon can be detected in experiments under high-energy-density conditions.

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Section: Introductionmentioning

confidence: 99%