Numerical simulations of desublimation of CO<sub>2</sub> or water vapor in liquid methane with cellular automata method

XU Xiaoying; YOU Hao; WANG Wen

doi:10.11949/j.issn.0438-1157.20181170

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Numerical simulations of desublimation of CO₂ or water vapor in liquid methane with cellular automata method

更新时间：2025-12-10

- Numerical simulations of desublimation of CO₂ or water vapor in liquid methane with cellular automata method
- CIESC Journal Issue S2, Pages: 402-407(2018)
- 作者机构：
  
  上海交通大学机械与动力工程学院,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181170
  CLC： E89
- Online First：31 December 2018，
  
  Published：31 December 2018
- 稿件说明：
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XU Xiaoying, YOU Hao, WANG Wen. Numerical simulations of desublimation of CO₂ or water vapor in liquid methane with cellular automata method[J]. CIESC Journal, 2018, (S2): 402-407. DOI: 10.11949/j.issn.0438-1157.20181170.
DOI：

XU Xiaoying, YOU Hao, WANG Wen. Numerical simulations of desublimation of CO₂ or water vapor in liquid methane with cellular automata method[J]. CIESC Journal, 2018, (S2): 402-407. DOI: 10.11949/j.issn.0438-1157.20181170. DOI：

摘要

利用热质传输方程、流体动力学方程、连续性方程和生长动力学规律分析了晶体生长的物理机制，同时利用元胞自动机法建立了凝华相变的模型，通过计算机模拟了水蒸气以及CO2在低温液态甲烷中凝华形成晶体的过程，得到了冰晶的二维模拟结果以及CO2晶体的二维和三维模拟结果。结果显示该模型能够模拟出指定温度和过饱和度下的冰晶以及CO2晶体生长过程。冰晶以及CO2晶体生长过程中具有一定的各向异性。该模型可以用于分析LNG中冰晶以及CO2晶体的形成，有利于改善LNG储存运输使用等过程中的技术流程。

Abstract

The physical mechanism of crystal growth was analyzed using heat and mass transfer equations

Navier-Stokes equations and growth dynamics in this paper. Cellular automata (CA) method was used to form a phase change model. The desublimation process of water vapor and CO2 in liquid methane is observed by computer simulation. Not only the two-dimensional simulation results of ice crystal growth

but also the two-dimensional and three-dimensional simulation results of CO2 crystal growth in liquid methane were obtained. Results show that this model could simulate water and CO2 crystallization under sub-cooled and supersaturated environment. The two-dimensional ice crystal result is very similar to the real ice crystal with topological structure. CO2 crystal has simpler structure and the simulation results confirm to the characters of authentic CO2 crystal. This model can be improved to analyze the water and CO2 crystallization in liquid natural gas (LNG) and may be used to improve the technology processes of storage

transportation and utilization of LNG.

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Numerical simulations of desublimation of CO2 or water vapor in liquid methane with cellular automata method

DOI：10.11949/j.issn.0438-1157.20181170

摘要

Abstract

关键词

Keywords

references

Numerical simulations of desublimation of CO₂ or water vapor in liquid methane with cellular automata method