颗粒射流的模拟：颗粒流真的是“理想流体”吗？"
Simulation of granular jet: Is granular flow really a "perfect fluid?"
摘要：
我们进行了三维模拟的颗粒射流冲击摩擦和无摩擦颗粒。在实验中观察到的小剪切应力[X. Cheng等人，物理修订版信函99，188001（2007）]通过我们的模拟再现。然而，撞击后的流体状态远非完美的流体，因此，颗粒射流和夸克-胶子等离子体之间的相似性是肤浅的，因为观察到的粘度是有限的，其值与动力学理论的预测一致。
英文摘要：
We perform three-dimensional simulations of a granular jet impact for both frictional and frictionless grains. Small shear stress observed in the experiment[X. Cheng et al., Phys. Rev. Lett. 99, 188001 (2007) ] is reproduced through our simulation. However, the fluid state after the impact is far from a perfect fluid, and thus, similarity between granular jets and quark gluon plasma is superficial, because the observed viscosity is finite and its value is consistent with the prediction of the kinetic theory.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
