爆轟加載下銀氣溶膠源項實驗研究
發(fā)布時間：2019-01-06 12:01
【摘要】：為研究钚氣溶膠生成規(guī)律及源項分布,提出了一種密封環(huán)境下的金屬氣溶膠源項實驗方法,利用爆炸容器及氣溶膠采樣器等實驗設(shè)備,開展了钚替代材料銀的氣溶膠源項生成實驗,分析了空氣動力學(xué)直徑小于10μm的銀氣溶膠源項分布特性,并與外場擴(kuò)散試驗中钚氣溶膠數(shù)據(jù)進(jìn)行了對比。進(jìn)一步采用不同炸藥及加載裝置,對相同銀片樣品進(jìn)行加載實驗,研究了加載峰值壓力對銀氣溶膠源項分布的影響。研究結(jié)果表明,金屬銀可作為替代材料研究爆轟加載條件下钚氣溶膠的源項參數(shù),在一定實驗條件下,二者歸一化積累質(zhì)量分布具有較高的一致性;爆轟加載產(chǎn)生的銀氣溶膠中,較小粒徑氣溶膠質(zhì)量含量較高。氣溶膠總量與加載峰值壓力呈二次函數(shù)分布,當(dāng)峰值壓力超過某個臨界值時,氣溶膠總量將達(dá)到極值;此外,通過對同發(fā)次實驗的3次不同采樣數(shù)據(jù)進(jìn)行分析,發(fā)現(xiàn)了較明顯的氣溶膠凝并和沉降現(xiàn)象。
[Abstract]:In order to study the regularity of plutonium aerosol formation and the distribution of source term, an experimental method of metal aerosol source term in sealed environment was proposed. The experimental equipment, such as explosion container and aerosol sampler, was used. The aerosol source term generation experiment of plutonium substitute silver was carried out. The distribution characteristics of silver aerosol source term with aerodynamic diameter less than 10 渭 m were analyzed and compared with the plutonium aerosol data in the field diffusion test. The effect of peak loading pressure on the distribution of silver aerosol source term was studied by using different explosives and loading devices. The results show that the metallic silver can be used as an alternative material to study the source term parameters of plutonium aerosol under detonation loading. Under certain experimental conditions, the normalized accumulation mass distribution of the two materials is in good agreement. In the silver aerosol produced by detonation loading, the mass content of the smaller size aerosol is higher. The distribution of aerosol total and loading peak pressure is quadratic. When the peak pressure exceeds a certain critical value, the aerosol total will reach the extreme value. In addition, through the analysis of three different sampling data of the same experiment, the phenomenon of aerosol condensation and sedimentation was found.
【作者單位】： 中國工程物理研究院流體物理研究所;
【基金】：國家自然科學(xué)基金項目(21307119)
【分類號】：O381
本文編號：2402761
[Abstract]:In order to study the regularity of plutonium aerosol formation and the distribution of source term, an experimental method of metal aerosol source term in sealed environment was proposed. The experimental equipment, such as explosion container and aerosol sampler, was used. The aerosol source term generation experiment of plutonium substitute silver was carried out. The distribution characteristics of silver aerosol source term with aerodynamic diameter less than 10 渭 m were analyzed and compared with the plutonium aerosol data in the field diffusion test. The effect of peak loading pressure on the distribution of silver aerosol source term was studied by using different explosives and loading devices. The results show that the metallic silver can be used as an alternative material to study the source term parameters of plutonium aerosol under detonation loading. Under certain experimental conditions, the normalized accumulation mass distribution of the two materials is in good agreement. In the silver aerosol produced by detonation loading, the mass content of the smaller size aerosol is higher. The distribution of aerosol total and loading peak pressure is quadratic. When the peak pressure exceeds a certain critical value, the aerosol total will reach the extreme value. In addition, through the analysis of three different sampling data of the same experiment, the phenomenon of aerosol condensation and sedimentation was found.
【作者單位】： 中國工程物理研究院流體物理研究所;
【基金】：國家自然科學(xué)基金項目(21307119)
【分類號】：O381
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，本文編號：2402761
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