本文選題：不穩(wěn)定性 + 爆炸　； 參考：《爆炸與沖擊》2017年03期

【摘要】：采用磁流體力學(xué)(magnetohydrodynamics,MHD)方程組對非理想情況下磁場對球形重質(zhì)氣體物理爆炸的作用過程進(jìn)行數(shù)值模擬,同時(shí),為了保證每一步中磁場散度為零,引入由12-solve CTU算法衍生出的CTU+CT算法。結(jié)果清晰地顯示了重質(zhì)氣體團(tuán)在磁場影響下的整個(gè)爆炸過程。在非理想情況下,爆炸過程中氣體團(tuán)界面產(chǎn)生液滴狀結(jié)構(gòu),隨著氣體團(tuán)被壓縮,不穩(wěn)定性現(xiàn)象最終得到抑制。從結(jié)果中看出,電阻和雙極擴(kuò)散效應(yīng)會阻礙磁場對氣體團(tuán)的作用,同時(shí),雙極擴(kuò)散效應(yīng)還會增大磁壓力的作用范圍。
[Abstract]:The magnetohydrodynamic (MHD) equations are used to simulate the effect of magnetic field on the physical explosion of spherical heavy gas under non-ideal conditions. In order to ensure that the magnetic field divergence is zero in each step, the CTU CT algorithm derived from the 12-solve CTU algorithm is introduced. The results clearly show the whole explosion process of the heavy gas mass under the influence of magnetic field. In the non-ideal case, the gas cluster interface produces droplet structure during explosion, and the instability is finally suppressed with the compression of the gas mass. It can be seen from the results that resistance and bipolar diffusion effect will hinder the effect of magnetic field on the gas cluster, and at the same time, the bipolar diffusion effect will increase the range of action of magnetic pressure.
【作者單位】： 南京理工大學(xué)瞬態(tài)物理國家重點(diǎn)實(shí)驗(yàn)室;解放軍裝備學(xué)院激光推進(jìn)及應(yīng)用國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(11272156)
【分類號】：O381
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本文編號：1910119