矿业科学学报2026，Vol.11Issue(2)：299-309,11.DOI:10.19606/j.cnki.jmst.2026005
含炭吸收剂的液氧瞬态相变膨胀气体传播规律及强度特性研究
Propagation and intensity characteristics of expansion gases from transient phase change of liquid oxygen with carbon-containing absorbents
摘要
Abstract
This study investigates how different carbon-containing absorbents affect the transient phase change expansion of liquid oxygen.Specifically,we prepared 3 types of liquid oxygen charges with var-ying carbon contents(0,0.1 g,and 0.2 g).A high-speed schlieren system and an overpressure measurement system were used for comparative analysis on the propagation patterns of gas precursor and phase change products in the schlieren flow field and the intensity changes of the phase change gas pressure.Both theoretical and experimental analysis were conducted to unveil the propagation patterns,evolution process and pressure distribution of the phase change gas in the air flow field.Results show that ① Carbon content exerts a significant regulatory effect on phase change expansion.As the carbon content increased from 0 to 0.2 g,the initiation time increased from 1.32 ms to 3.69 ms,and the cu-mulative pressure time increased by 180%.② The propagation speed of the gas precursor exhibited significant increase,with maximum horizontal speed rising from 473.96 m/s to 692.71 m/s and verti-cal speed from 875.00 m/s to 1 604.17 m/s.③ Peak overpressure showed nonlinear growth,with axi-al overpressure increasing from 7.754 MPa to 16.567 MPa and radial overpressure from 1.301 MPa to 4.838 MPa.④ Separation time between the gas precursor and the phase change products increased from 60 μs to 110 μs.Vertical displacement generally exceeded horizontal displacement,showing an anisotropic propagation pattern of"rapid vertical expansion and slow lateral spread".关键词
液氧相变膨胀气体/高速纹影/超压测量系统/气体前驱/含炭吸收剂Key words
expansion gases from transient phase change of liquid oxygen/high-speed schlieren/over-pressure measurement system/gas precursor/carbon-containing absorbent分类
矿业与冶金引用本文复制引用
王雁冰,刘玉晨,魏正,雷振,宋家旺,张小军,孟祥栋,孟令天..含炭吸收剂的液氧瞬态相变膨胀气体传播规律及强度特性研究[J].矿业科学学报,2026,11(2):299-309,11.基金项目
国家自然科学基金(52574184) （52574184）
中央高校基本科研业务费专项资金(2025 JCCXLJ 01) （2025 JCCXLJ 01）
