Two-Dimensional Riemann Problem for a Hyperbolic System of Nonlinear Conservation Laws : II. Initial Data Involving Some Rarefaction Waves

This paper is a continuation of our first paper (J. Differential Equations, in press). In this paper, we solve the 2-D Riemann problem. with the initial data projecting some contact discontinuities and rarefaction waves. The solutions reveal a variety of geometric structures for the interaction of elementary waves such as contact discontinuities, rarefaction waves, shocks, and/or δ-shocks defined in our first paper.