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首页> 美国政府科技报告 >Progress in Initiator Modeling. 40th International Annual Conference of ICT Karlsruhe, Germany. June 23, 2009 through June 26, 2009
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Progress in Initiator Modeling. 40th International Annual Conference of ICT Karlsruhe, Germany. June 23, 2009 through June 26, 2009

机译：启动器建模的进展。第40届德国卡尔斯鲁厄ICT国际年会。 2009年6月23日至2009年6月26日

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There is great interest in applying magnetohydrodynamic (MHD) simulation techniques to the designs of electrical high explosive (HE) initiators, for the purpose of better understanding a designs sensitivities, optimizing its performance, and/or predicting its useful lifetime. Two MHD-capable LLNL codes, CALE and ALE3D, are being used to simulate the process of ohmic heating, vaporization, and plasma formation in the bridge of an initiator, be it an exploding bridgewire (EBW), exploding bridgefoil (EBF) or slapper type initiator. The initiation of the HE is simulated using Tarver Ignition & Growth reactive flow models. 1-D, 2-D and 3-D models have been constructed and studied. The models provide some intuitive explanation of the initiation process and are useful for evaluating the potential impact of identified aging mechanisms (such as the growth of intermetallic compounds or powder sintering). The end product of this work is a simulation capability for evaluating margin in proposed, modified or aged initiation system designs.

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