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(magnetohydrodynamics,MHD)方程組對非理想情況下磁場對球形重質氣體物理爆炸的作用過程進行數值模擬,同時,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。結果清晰地顯示了重質氣體團在磁場影響下的整個爆炸過程。在非理想情況下,爆炸過程中氣體團界面產生液滴狀結構,隨著氣體團被壓縮,不穩(wěn)定性現象最終得到抑制。從結果中看出,電阻和雙極擴散效應會阻礙磁場對氣體團的作用,同時,雙極擴散效應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】： 南京理工大學瞬態(tài)物理國家重點實驗室;解放軍裝備學院激光推進及應用國家重點實驗室;
【基金】：國家自然科學基金項目(11272156)
【分類號】：O381
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本文編號：1910119