球接管容器氣體爆炸尺寸效應(yīng)的試驗研究與數(shù)值分析
發(fā)布時間:2018-11-07 15:53
【摘要】:為了解尺寸對球形容器連接管道甲烷-空氣混合物爆炸的影響規(guī)律,利用Fluent軟件,采用κ-ε湍流模型、渦耗散模型(簡稱EDC模型)、壁面熱耗散、熱輻射模型及SIMPLE算法,建立了球形容器連接管道內(nèi)甲烷-空氣混合物爆炸的數(shù)值模型,對容器與管道內(nèi)甲烷-空氣預(yù)混氣體爆炸的尺寸效應(yīng)進(jìn)行了數(shù)值模擬。結(jié)果表明:隨管道內(nèi)徑增大,球形容器內(nèi)最大爆炸壓力逐漸增大,管道末端最大爆炸壓力變化無明顯規(guī)律;而隨管道長度增加,球形容器內(nèi)最大爆炸壓力逐漸減小;改變管道內(nèi)徑,較大體積球形容器內(nèi)最大爆炸壓力均大于較小體積球形容器內(nèi)最大爆炸壓力,最大爆炸壓力上升速率的規(guī)律則相反,容器體積對管道末端最大爆炸壓力的影響無明顯規(guī)律。
[Abstract]:In order to understand the effect of dimension on the explosion of methane-air mixture in spherical vessel connected pipes, the 魏-蔚 turbulence model, vortex dissipation model (EDC model), wall heat dissipation, thermal radiation model and SIMPLE algorithm were used by Fluent software. A numerical model of methane air mixture explosion in a spherical vessel connecting pipe is established. The size effect of methane air premixed gas explosion in a vessel and pipeline is numerically simulated. The results show that the maximum explosion pressure in the spherical vessel increases gradually with the increase of the inner diameter of the pipe, but the maximum explosion pressure in the spherical vessel decreases with the increase of the length of the pipe. The maximum explosion pressure in larger spherical vessel is larger than that in smaller spherical vessel, and the law of maximum explosion pressure rise rate is opposite. The effect of vessel volume on the maximum explosion pressure at the end of the pipe is irregular.
【作者單位】: 南京工業(yè)大學(xué)安全科學(xué)與工程學(xué)院江蘇省危險化學(xué)品本質(zhì)安全與控制技術(shù)重點實驗室;
【基金】:國家自然科學(xué)基金項目(51376088)
【分類號】:O643.221;TE65
本文編號:2316829
[Abstract]:In order to understand the effect of dimension on the explosion of methane-air mixture in spherical vessel connected pipes, the 魏-蔚 turbulence model, vortex dissipation model (EDC model), wall heat dissipation, thermal radiation model and SIMPLE algorithm were used by Fluent software. A numerical model of methane air mixture explosion in a spherical vessel connecting pipe is established. The size effect of methane air premixed gas explosion in a vessel and pipeline is numerically simulated. The results show that the maximum explosion pressure in the spherical vessel increases gradually with the increase of the inner diameter of the pipe, but the maximum explosion pressure in the spherical vessel decreases with the increase of the length of the pipe. The maximum explosion pressure in larger spherical vessel is larger than that in smaller spherical vessel, and the law of maximum explosion pressure rise rate is opposite. The effect of vessel volume on the maximum explosion pressure at the end of the pipe is irregular.
【作者單位】: 南京工業(yè)大學(xué)安全科學(xué)與工程學(xué)院江蘇省危險化學(xué)品本質(zhì)安全與控制技術(shù)重點實驗室;
【基金】:國家自然科學(xué)基金項目(51376088)
【分類號】:O643.221;TE65
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