| 王宏亮,田宙.砂墙吸能效应对化爆相似律影响的数值研究[J].计算力学学报,2009,26(4):585~590 |
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| 砂墙吸能效应对化爆相似律影响的数值研究 |
| The numerical study on the effect of energy absorption of sand-walls on similarity laws in chemical explosion |
| 投稿时间：2008-12-06 |
| DOI：10.7511/jslx20094025 |
| 中文关键词: 缩比实验 相似律 冲击波 化爆 数值模拟 |
| 英文关键词:scale experiment similarity laws shock wave chemical explosion numerical simulation |
| 基金项目: |
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| 中文摘要: |
| 同介质中同能量密度的化学炸药爆炸满足爆炸相似律,在此类化爆实验中,缩比实验作为一种经济有效的实验方法被广泛采用。一些研究人员进行化爆缩比实验时,为了保证实验安全,通常会在实验中加入砂墙,起到吸收爆炸能量,消减冲击波的作用。为了研究砂墙消波吸能效应对化爆相似律的影响,建立了同介质中同能量密度化学炸药爆炸的一维计算模型,并利用两相流程序对三种缩比条件下(1∶1/1∶5/1∶10)的物理模型进行了数值模拟。数值计算结果显示:由于砂墙的吸能效应,化爆不再满足相似律。 |
| 英文摘要: |
| The chemical explosion with the same energy density and in the same medium, satisfies the similarity laws in explosion. Scale experiment is widely adopted as an economical technique in this kind of experiment. The sand-walls usually are applied to assure safety in experiments, which can absorb explosion energy and weaken the shock wave. For studying the effect of energy absorption of sand-walls on similarity laws in explosion, 1_D numerical model of chemical explosion is set up and three physics models under the different scale ratio (1∶1/1∶5/1∶10) are simulated using the two phase program. The numerical results show that chemical explosion no longer satisfies the similarity laws because of the effect of energy absorption of sand-walls. |
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