Perturbational Blowup Solutions to the 1-dimensional Compressible Euler Equations

Details Perturbational Blowup Solutions to the 1-dimensional Compressible Euler Equations Perturbational Blowup Solutions to the 1-dimensional Compressible Euler Equations

2010-12-09

arxiv.org/abs/1012.2033v1

Physics Letters A, 375 (2011), 3821-3825

Physics

Mathematical Physics

11 pages, Key Words: Euler Equations, Navier-Stokes Equations, Perturbation, Linear Velocity, Perturbational Method, Non-Radia

Scientific paper

10.1016/j.physleta.2011.09.001

We study the construction of analytical non-radially solutions for the 1-dimensional compressible adiabatic Euler equations in this article. We could design the perturbational method to construct a new class of analytical solutions. In details, we perturb the linear velocity:% \begin{equation} u=c(t)x+b(t) \end{equation} and substitute it into the compressible Euler equations. By comparing the coefficients of the polynomial, we could deduce the corresponding functional differential system of $(c(t),b(t),\rho^{\gamma-1}(0,t)).$ Then by skillfully applying the Hubble's transformation: \begin{equation} c(t)=\frac{\dot{a}(t)}{a(t)}, \end{equation} the functional differential equations can be simplified to be the system of $(a(t),b(t),\rho^{\gamma-1}(0,t))$. After proving the existence of the corresponding ordinary differential equations, a new class of blowup or global solutions can be shown. Here, our results fully cover the previous known ones by choosing $b(t)=0$.

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