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arXiv 2406.01902math.AP
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相互作用的冲击波的可压缩Navier-Stokes/Allen-Cahn系统的大时间行为与锐界面极限

Large Time Behavior and Sharp Interface Limit of Compressible Navier-Stokes/Allen-Cahn System for Interacting Shock Waves

Yazhou Chen, Qiaolin He, Xiaoding Shi, Xiaoping Wang

AI总结:

本文研究了具相互作用冲击波的可压缩Navier-Stokes/Allen-Cahn系统Cauchy问题,证明了其整体解的存在性、渐近收敛性及在扩散界面厚度趋于零时的锐界面极限。

摘要:

本文研究了同一族中具有相互作用冲击波的可压缩Navier-Stokes/Allen-Cahn系统Cauchy问题的大时间行为和锐界面极限。该系统是描述不混溶两相流动运动的重要数学模型。结果表明,如果初始密度和速度接近同一族中两个冲击波的叠加,那么可压缩Navier-Stokes/Allen-Cahn系统存在唯一的整体解,并且该解渐近收敛于沿相反方向移动的粘性冲击波和稀疏波的叠加。此外,随着扩散界面厚度趋于零,该整体时间解在$L^\infty$-范数下收敛于$p$-系统的熵解。

英文摘要:

In this paper, we study the large time behavior and sharp interface limit of the Cauchy problem for compressible Navier-Stokes/Allen-Cahn system with interaction shock waves in the same family. This system is an important mathematical model for describing the motion of immiscible two-phase flow. The results show that, if the initial density and velocity are near the superposition of two shock waves in the same family, then there exists a unique global solution to the compressible Navier-Stokes/Allen-Cahn system, and this solution asymptotically converges to the superposition of the viscous shock wave and rarefaction wave which moving in opposite directions. Moreover, this global-in-time solution converges to the entropy solution of $p$-system in $L^\infty$-norm as the thickness of the diffusion interface tends to zero.

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。

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