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Modelling the interaction of nested wire arrays in implodingZ-pinches

机译:内爆中嵌套线阵列的相互作用建模Z夹

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Summary form only given. We present the results of two dimensionalmagnetohydrodynamic simulations of nested array collisions. Results fornested tungsten arrays on the “Z” generator at SandiaNational Laboratories, show that elements of all three modes are atwork. The fraction of the circumference occupied by the exploded innerarray wires determines the fraction of momentum transferred betweenarrays at collision. For large numbers of wires in the inner array, themomentum transfer is large and a hydrodynamic collision mode results.For much lower numbers of wires in the inner, the outer array materialis free to pass through the gaps and a transparent inner mode results.In all cases, flux compression is found to enhance the level of momentumtransfer. A zero dimensional model was modified to mock-up the differenteffects of nested array interactions and used to provide scaling ofX-ray power with array diameters and masses. Maximum powers wereobtained for the transparent inner mode with light inner arrays. Howeversome artificial mechanism for limiting current flow in the inner arraywas required since flux compression appears to excite theRayleigh-Taylor instability in the inner array
机译:仅提供摘要表格。我们提出二维结果 嵌套阵列碰撞的磁流体动力学模拟。结果 在Sandia的“ Z”发生器上嵌套钨阵列 国家实验室表明,这三种模式的要素都在 工作。爆炸内部占据的圆周部分 阵列线决定了之间传递的动量的比例 碰撞时的数组。对于内部阵列中的大量导线, 动量传递很大,并且产生了流体动力碰撞模式。 对于内部,外部阵列材料中的电线数量少得多 可以自由通过间隙,从而获得透明的内部模式。 在所有情况下,通量压缩都可以提高动量水平 转移。修改了零维模型以模拟不同的模型 嵌套数组交互的影响,并用于提供缩放比例 具有阵列直径和质量的X射线功率。最大权力是 对于具有光内部阵列的透明内部模式获得的结果。然而 限制内部阵列中电流流动的一些人为机制 因为通量压缩似乎激发了 内部阵列中的瑞利-泰勒不稳定性

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