Study on medium conversion characteristics of tank boiling overflow process based on Fluent

doi:10.16265/j.cnki.issn1003-3033.2025.04.0945

Abstract

Abstract:

In order to reduce the risk of boil-over accidents in storage tanks and develop efficient prevention and control strategies, two-dimensional transient numerical simulations of the boiling process of oil-water two-phase system in closed containers were carried out using Fluent software. The effects of different tank types, initial water layer thickness, oil-water ratio and other factors on the boiling process were analyzed through numerical simulation. The phase distribution, temperature field and hydrodynamic behavior were studied during the whole process of the combustion triggering to the end of the boil-over. The results show that for the same tank type, the higher the water content of the oil, the smaller the intensity of boiling overflow. When the tank boils over, the oil-water interface undergoes violent instability, and the two phases of the medium in the container are interspersed with each other, presenting a chaotic state. The liquid near the tank wall of boils upward first, with the peak temperature of the liquid phase up to 400 K. When the horizontal storage tank boils over, the overall temperature of the liquid phase is lower than that in the vertical storage tank. The onset of boiling overflow in the horizontal tank occurs earlier than in the vertical tank. Therefore, the boiling overflow in the vertical tank is more dangerous.

Key words: Fluent, storage tanks, boiling overflow process, medium conversion characteristics, numerical simulation

CLC Number:

X937

WU Feiyang, CHEN Dongliang, YIN Caihong, LYU Tingwei, SHA Yanshan, CHEN Shibo. Study on medium conversion characteristics of tank boiling overflow process based on Fluent[J]. China Safety Science Journal, 2025, 35(4): 158-164.

Figures/Tables 8

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试验工况	储罐高度	储罐直径	油层厚度	水层厚度
1	1 250	1 000	50	50
2	1 250	1 000	100	100
3	1 250	1 000	100	50
4	1 250	1 000	200	100
5	1 250	1 000	150	50
6	1 250	1 000	300	100
7	750	1 500	50	50
8	750	1 500	100	100
9	750	1 500	100	50
10	750	1 500	200	100
11	750	1 500	150	50
12	750	1 500	200	100