RENORMALIZATION AND UNIVERSAL STRUCTURE OF BLOWUP IN 1D CONSERVATION LAWS
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作者:
Mailybaev, Alexei A.
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Inst Nacl Matemat Pura & Aplicada IMPA, Estr Dona Castorina 110, BR-22460320 Rio De Janeiro, RJ, BrazilInst Nacl Matemat Pura & Aplicada IMPA, Estr Dona Castorina 110, BR-22460320 Rio De Janeiro, RJ, Brazil
Mailybaev, Alexei A.
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机构:
[1] Inst Nacl Matemat Pura & Aplicada IMPA, Estr Dona Castorina 110, BR-22460320 Rio De Janeiro, RJ, Brazil
We discuss universality properties of blowup of classical (smooth) solutions of conservation laws in one space dimension. It is shown that the renormalized wave profile tends to a universal function, which is independent both of initial conditions and of the form of a conservation law. This property is explained in terms of the renormalization group theory. A solitary wave appears in logarithmic coordinates of the Fourier space as a counterpart of this universality. As a numerical example, blowup in ideal polytropic gas is considered.
机构:
Huizhou Univ, Dept Math, Huizhou 516007, Guangdong, Peoples R ChinaHuizhou Univ, Dept Math, Huizhou 516007, Guangdong, Peoples R China
Hu, Fuxing
Wang, Rong
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South Univ Sci & Technol China, Dept Gen Educ, Shenzhen 518055, Guangdong, Peoples R ChinaHuizhou Univ, Dept Math, Huizhou 516007, Guangdong, Peoples R China
Wang, Rong
Chen, Xueyong
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Xuthang Univ, Fac Math & Stat, Xuchang 461000, Henan, Peoples R ChinaHuizhou Univ, Dept Math, Huizhou 516007, Guangdong, Peoples R China
Chen, Xueyong
Feng, Hui
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Wuhan Univ, Fac Math & Stat, Wuhan 430072, Hubei, Peoples R ChinaHuizhou Univ, Dept Math, Huizhou 516007, Guangdong, Peoples R China