## Abstract

This paper is concerned with asymptotic behavior of solutions of a one-dimensional barotropic flow governed by v_{t} - u_{x} = 0, u_{t} + p(v)_{x} = μ(u_{x}/v)_{x} on R^{1}
_{+} with boundary. The initial data of (v, u) have constant states (v_{+}, u_{+}) at +∞ and the boundary condition at x = 0 is given only on the velocity u, say u_{-}. By virtue of the boundary effect the solution is expected to behave as outgoing wave. Therefore, when u- < u_{+}, v_{-} is determined as (v_{+}, u_{+}) ∈ R_{2}(v_{-}, u_{-}), 2-rarefaction curve for the corresponding hyperbolic system, which admits the 2-rarefaction wave (v^{r}, u^{r})(x/t) connecting two constant states (v_{-}, u_{-}) and (v_{+}, u_{+}). Our assertion is that the solution of the original system tends to the restriction of (v^{r}, u^{r})(x/t) to R^{1}
_{+} as t → ∞ provided that both the initial perturbations and |(v_{+} -v_{-}, u_{+} - u_{-})| are small. The result is given by an elementary L^{2} energy method.

Original language | English |
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Pages (from-to) | 431-441 |

Number of pages | 11 |

Journal | Japan Journal of Industrial and Applied Mathematics |

Volume | 16 |

Issue number | 3 |

Publication status | Published - 1999 Oct |

## Keywords

- Asymptotic behavior
- Boundary
- Compressible viscous gas
- Rarefaction wave

## ASJC Scopus subject areas

- Mathematics(all)
- Applied Mathematics