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arXiv 2012.14203math.AP
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双极流体模型的松弛极限

The relaxation limit of bipolar fluid models

Nuno J. Alves, Athanasios E. Tzavaras

AI总结:

本研究针对双极流体模型,通过构建相对能量恒等式,证明了高摩擦区域下双极Euler-Poisson系统的耗散弱解收敛于双极漂移扩散系统的强解,建立了两类系统间的松弛极限关系。

摘要:

本研究建立了双极Euler-Poisson(欧拉-泊松)系统到双极drift-diffusion(漂移扩散)系统的松弛极限,所采用的初值能保证后者存在光滑解。我们为双极流体系统推导了相对能量恒等式,并利用该恒等式证明:在高摩擦区域中,双极Euler-Poisson系统的耗散弱解会收敛到双极drift-diffusion系统的强解,且该强解满足远离真空的有界性条件。

英文摘要:

This work establishes the relaxation limit from the bipolar Euler-Poisson system to the bipolar drift-diffusion system, for data so that the latter has a smooth solution. A relative energy identity is developed for the bipolar fluid system and is used to show that a dissipative weak solution of the bipolar Euler-Poisson system converges in the high-friction regime to a strong and bounded away from vacuum solution of the bipolar drift-diffusion system.

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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