高压物理学报2024，Vol.38Issue(3)：181-190,10.DOI:10.11858/gywlxb.20230776
刚性和柔性多孔材料作用下氢气爆轰胞格结构的演化规律
Evolution Law of Hydrogen Detonation Cellular Structure under the Effect of Rigid and Flexible Porous Materials
摘要
Abstract
As highly efficient absorbing and dissipating materials,porous materials were widely used in the study of detonation wave attenuation.In order to further explore the mechanism of explosion suppression by porous materials,the effects of typical flexible(sponge)and rigid(wire mesh)porous materials on the detonation cellular structure for hydrogen and oxygen mixture were investigated systematically.The effects of thickness and porosity of sponge and wire mesh on the structure and size of detonation cell were discussed in detail.The cellular pattern of detonation wave was recorded by using smoke plate technology,and the cell size was calculated.The pressure sensors were used to record the arrival time of the detonation wave,and the average propagation velocity of detonation wave was obtained.The results show that the detonation cellular structure closely depends on the thickness and porosity of sponge and wire mesh,and three phases of the propagation can be observed in the tube,including detonation failure,acceleration and re-initiation.In addition,size of the detonation cell is also closely related to the thickness and porosity of sponge and wire mesh.Increasing the thickness of porous materials and decreasing the porosity both can increase the size of the detonation cell.By comparing the effects of sponge and wire mesh on the detonation cellular structure,it can be found that at the same initial condition,the rigid porous material has a stronger inhibition effect on detonation.But the difference will be gradually decreased with the increase of the thickness of the porous materials.Finally,the limit of the detonation propagation is analyzed quantitatively by introducing the dimensionless parameter DH/λ.For flexible and rigid porous materials,the detonation limit can be nearly quantified as DH/λ≈3.0 and DH/λ～3.1.关键词
爆轰胞格结构/柔性多孔材料/刚性多孔材料/爆轰极限/氢气Key words
detonation cellular structure/flexible porous material/rigid porous material/detonation limit/hydrogen分类
数理科学引用本文复制引用
罗荣钦,彭澳,张静雯,王珺,陈先锋,申利远,师吉浩,孙绪绪..刚性和柔性多孔材料作用下氢气爆轰胞格结构的演化规律[J].高压物理学报,2024,38(3):181-190,10.基金项目
湖北省重点研发"揭榜挂帅"科技项目(2022BEC024) （2022BEC024）
广东省自然科学基金(2023A1515012080) （2023A1515012080）
国家自然科学基金(12302443) （12302443）
国家重点研发计划(2021YFB4000901) （2021YFB4000901）
火灾与爆炸安全防护重庆市重点实验室开放基金(LQ22KFJJ06) （LQ22KFJJ06）
中央高校基础研究项目(223161001) （223161001）
中国民航大学民航热灾害防控应急重点实验室开放基金(RZH2021-KF-05) （RZH2021-KF-05）
中国科学技术大学火灾科学国家重点实验室开放基金(HZ2022-KF09) （HZ2022-KF09）
