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arXiv 1906.02609math.APmath-phmath.MP
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具有变量增长的两相跨音速流问题:非线性模式和驻波

Double phase transonic flow problems with variable growth: nonlinear patterns and stationary waves

Anouar Bahrouni, Vicenţiu D. Rădulescu, Dušan D. Repovš

摘要:

本文研究了跨音速流理论中的一类双相能量泛函。它们的主要特点是相应的欧拉方程由变系数的Baouendi-Grushin算子驱动。该偏微分方程是混合型的,具有椭圆和双曲区域。在建立了Baouendi-Grushin算子的一个加权不等式和一个相关的紧性之后,我们建立了反应在任意扰动下驻波的存在性.

英文摘要:

In this paper we are concerned with a class of double phase energy functionals arising in the theory of transonic flows. Their main feature is that the associated Euler equation is driven by the Baouendi-Grushin operator with variable coefficient. This partial differential equation is of mixed type and possesses both elliptic and hyperbolic regions. After establishing a weighted inequality for the Baouendi-Grushin operator and a related compactness property, we establish the existence of stationary waves under arbitrary perturbations of the reaction.

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