摘要(英) |
In this study, we investigate the global existence of classical solutions for gas flows through a divergent duct. This problem can be described as an initial-boundary value
problem for the full compressible Euler equations with the geometric source in Lagrangian coordinates, which can be viewed as a hyperbolic system of balance laws when the Riemann invariants are applied to the equations. We prove the global existence theorem for classical solutions under appropriate conditions on entropies, divergent ducts, and initial and boundary values. This theorem mainly depends on the local existence theorem and uniform a priori estimates on two Riemann invariants, which are obtained by introducing generalized Lax transformations. |
參考文獻 |
[1] S.-W. Chou, J. M. Hong, and H.-Y. Lee, Global Existence of Classical Solutions for the gas flows near vacuum through ducts expanding with space and time, J. Math. Anal., 10
(2023), 19-23.
[2] A. Douglis, Existence theorem for hyperbolic systems. Comm. Pure Appl. Math., 5 (1952), 119-154.
[3] T. T. Li, Global Solutions for Quasilineaar Hyperbolic Systems, Wiley, New York, 1994.
[4] T. T. Li and W. C. Yu, Boundary Value Problems for Quasilinear Hyperbolic Systems, Duke University Mathematics Series, V. Durham, NC 27706, Duke University, Mathematics
Department. X, 1985.
[5] L. W. Lin, H. X. Liu and T. Yang, Existence of globally bounded continuous solutions for nonisentropic gas dynamics equations, J. Math. Anal. Appl., 209, (1997), 492-506.
[6] T. Nishida, Nonlinear hyperbolic equations and related topics in fluid dynamics, D´epartment de Math´ematique, Universit´e de Paris-Sud, Orsay, 1978, Publications
Math´ematiques d’Orsay, No. 78-02.
[7] M. Yamaguti and T. Nishida, On some global solution for the quasilinear hyperbolic equations, Funkcial. Ekvac., 11 (1968), 51-57. |