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arXiv 2610.18367math.AP
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Ruggeri松弛Navier-Stokes-Fourier方程的一致衰减性

Uniform Decay for Ruggeri's Relaxed Navier-Stokes-Fourier Equations

University of Konstanz(康斯坦茨大学);RWTH Aachen(亚琛工业大学)

Heinrich Freistühler, Yizhou Zhou

AI总结:

该研究分析Ruggeri粘性热传导流体对称双曲模型的线性化,证明三维空间中$L^1\bigcap L^2$扰动的$L^2$衰减率为$(1+t)^{-3/4}$,与Navier-Stokes-Fourier极限一致。

摘要:

本研究针对Ruggeri经典的粘性热传导流体对称双曲模型,在齐次平衡态附近进行线性化处理。在三维空间中,我们证明当统一缩放三个弛豫时间的公共参数趋于零时,$L^1\bigcap L^2$中的扰动以$(1+t)^{-3/4}$的速率在$L^2$中衰减,该估计控制平衡变量及适当加权的应力、热通量,且衰减速率与形式Navier-Stokes-Fourier极限一致。

英文摘要:

This work studies the linearization of Ruggeri's classical symmetric hyperbolic model of viscous, heat-conductive fluids about a homogeneous equilibrium. In three space dimensions, we show that perturbations in $L^1\cap L^2$ decay in $L^2$ at the rate $(1+t)^{-3/4}$, uniformly as a common parameter scaling the three relaxation times tends to zero. The estimate controls the equilibrium variables together with the appropriately weighted stresses and heat flux, and has the same decay rate as the formal Navier--Stokes--Fourier limit.

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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