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| Lattice Boltzmann simulation of flow boiling heat transfer in two-dimensional horizontal channels |
| Received:March 14, 2022 Revised:June 30, 2022 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20220314001 |
| KeyWord:flow boiling LBM flow pattern inlet velocity heat transfer characteristics |
| Author | Institution |
| 孟凡星 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 |
| 董波 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 |
| 程显耀 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 ;中车大连机车研究所有限公司, 大连 |
| 秦妍 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 |
| 安祥 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 |
| 李维仲 |
大连理工大学 海洋能源利用与节能教育部重点实验室, 能源与动力学院, 大连 |
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| Abstract: |
| In this paper,the flow boiling of water in a two-dimensional horizontal channel was simulated by the lattice Boltzmann method.The characteristics of flow patterns under different wall superheat and the influence laws of different factors on the heat transfer were obtained.The results show that with the increase of wall superheat,the flow pattern in the channel undergoes a transition from bubble flow,slug flow to invert-annuler flow.The average heat flux and the average heat transfer coefficient increase first and then decrease.The decrease of the inlet velocity leads to the restricted bubble flow in the flow channel and inhibits the nuclear boiling,while the increase of the inlet velocity can effectively promote the departure of the bubbles.The average heat transfer coefficient of the wall increases with the increase of the inlet velocity,but the growth rate decreases.Reducing the channel width is conducive to the occurrence of vaporization,enhancement of the nucleate boiling and increase of the average heat transfer coefficient of the wall. |
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