On the temperature equation in a phase change pseudopotential lattice Boltzmann model

Journal Article · Sat Aug 04 00:00:00 EDT 2018 · International Journal of Heat and Mass Transfer

DOI:https://doi.org/10.1016/j.ijheatmasstransfer.2018.07.139· OSTI ID:1484648

Li, Qing ^[1]; Huang, J. Y. ^[1]; Kang, Qinjun  ^[2]

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1. Central South University, Changsha (China)
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We report that in a recent paper by Gong et al. [19], the researchers claimed that in the previous models the derivation of the target temperature equation for liquid–vapor phase change is paradoxical because the equations of state for ideal gases and non-ideal gases are applied simultaneously, and therefore they proposed a modified pseudopotential lattice Boltzmann (LB) model for liquid–vapor phase change. Here, in this technical note we clarify that the modified phase change pseudopotential LB model proposed by Gong et al. was based on a misunderstanding of the derivations in the previous studies as well as a mistake that they employed e=c_vT, where e is the internal energy, to the derive the temperature equation for non-ideal gases.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• Grant/Contract Number: 89233218CNA000001
• OSTI ID: 1484648
• Report Number(s): LA-UR-18-24369
• Journal Information: International Journal of Heat and Mass Transfer, Vol. 127, Issue Part B; ISSN 0017-9310
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
42 ENGINEERING
Lattice Boltzmann method
Pseudopotential model
Phase change