We derive a first-order rate of L 1 -convergence for stiff relaxation approximations to its equilibrium solutions, i.e., piecewise smooth entropy solutions with finitely many discontinuities for scalar, convex conservation laws. The piecewise smooth solutions include initial central rarefaction wave
Convergence to equilibrium for the relaxation approximations of conservation laws
β Scribed by Roberto Natalini
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 1023 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0010-3640
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β¦ Synopsis
We study the Cauchy problem for 2 X 2 semilinear and quasilinear hyperbolic systems with a singular relaxation term. Special comparison and compactness properties are established by assuming the subcharacteristic condition. Therefore we can prove the convergence to equilibrium of the solutions of these problems as the singular perturbation parameter tends to 0. This research was strongly motivated by the recent numerical investigations of S. Jin and Z. Xin on the relaxation schemes for conservation laws.
π SIMILAR VOLUMES
In this paper, the weakly nonlinear limit for the relaxation approximation of conservation laws in several space dimensions is derived through asymptotic expansions and justified by employing the energy estimates. Compared with the work of G. Q. Chen, C. D. Levermore, and T. P. Liu (1994, Comm. Pure
We study the existence of solutions to the Cauchy problem for a non-homogeneous nonstrictly hyperbolic system of 2 Ο« 2 conservation laws, satisfying the Lax entropy inequality. We obtain the convergence and the consistency of the approximating sequences generated by either the fractional Lax-Friedri