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arXiv 2103.00160math.AP
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具有表面张力和重力的线性化两相Navier-斯托克斯方程的时间衰减估计

Time-decay estimates for linearized two-phase Navier-Stokes equations with surface tension and gravity

Hirokazu Saito

摘要:

本文的目的是显示的时间衰减估计的线性两相Navier-斯托克斯方程的表面张力和重力。原始的两相Navier-斯托克斯方程描述了具有尖锐界面的两相不可压缩粘性流,该尖锐界面接近于$N$维欧几里得空间中的超平面$x_N=0$,$N \geq 2$。众所周知,当上层流体比下层流体重时,Rayleigh-Taylor不稳定性就会发生,而本文假设下层流体比上层流体重,并证明了线性化方程的$L_p-L_q$型时间衰减估计.我们的方法基于Shibata和Shimizu(2011)给出的解公式,用于与线性化方程相关的预解问题。

英文摘要:

The aim of this paper is to show time-decay estimates of solutions to linearized two-phase Navier-Stokes equations with surface tension and gravity. The original two-phase Navier-Stokes equations describe the two-phase incompressible viscous flow with a sharp interface that is close to the hyperplane $x_N=0$ in the $N$-dimensional Euclidean space, $N \geq 2$. It is well-known that the Rayleigh-Taylor instability occurs when the upper fluid is heavier than the lower one, while this paper assumes that the lower fluid is heavier than the upper one and proves time-decay estimates of $L_p-L_q$ type for the linearized equations. Our approach is based on solution formulas, given by Shibata and Shimizu (2011), for a resolvent problem associated with the linearized equations.

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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