Soluciones globales para sistema isotérmico con fuente

X. Wang
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Abstract

In this short note, we are concerned with the global existence of solutions to the isothermal system with source, where the inhomogeneous terms f(x,t,ρ,u)=b(x,t)ρ+(a′(x)/a(x))*ρu^2+α(x,t)ρu|u| are appeared in the momentum equation. Our work extended the results in the previous papers “Resonance for the Isothermal System of Isentropic Gas Dynamics” (Proc. A.M.S.139(2011),2821-2826), “Global Existence and Stability to the Polytropic Gas Dynamics with an Outer Force” (Appl. Math. Let-ters, 95(2019), 35-40) and “Existence of Global Solutions for Isentropic GasFlow with Friction” (Nonlinearity, 33(2020), 3940-3969), where the global solution was obtained for the source f(x,t,ρ,u)=(a′(x)/a(x))*ρu^2, f(x,t,ρ,u)=b(x,t)ρ, f(x,t,ρ,u)=α(x,t)ρu|u| respectively.
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全球等温系统解决方案与源
在这篇简短的文章中,我们关注具有源的等温系统解的整体存在性,其中非齐次项f(x,t,ρ,u)=b(x,t)ρ+(a ' (x)/a(x))*ρu^2+α(x,t)ρu|u|出现在动量方程中。我们的工作扩展了之前的论文“等熵气体动力学等温系统的共振”(Proc. A.M.S.139(2011),2821-2826),“具有外力的多向气体动力学的全局存在性和稳定性”(Appl。数学。letters, 95(2019), 35-40)和“具有摩擦的等熵气体流全局解的存在性”(非线性,33(2020),3940-3969),其中分别获得了源f(x,t,ρ,u)=(a ' (x)/a(x))*ρu^2, f(x,t,ρ,u)=b(x,t)ρ, f(x,t,ρ,u)=α(x,t)ρ |u|的全局解。
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