In this article, authors study the Cauch problem for a model of hyperbolic-elliptic coupled system derived from the one-dimensional system of the rudiating gas. By considering the initial data as a small disturbances ...In this article, authors study the Cauch problem for a model of hyperbolic-elliptic coupled system derived from the one-dimensional system of the rudiating gas. By considering the initial data as a small disturbances of rarefaction wave of inviscid Burgers equation, the global existence of the solution to the corresponding Cauchy problem and asymptotic stability of rarefaction wave is proved. The analysis is based on a priori estimates and L^2-energy method.展开更多
We investigate the asymptotic behavior of solutions of the initial-boundaryvalue problem for the generalized BBM-Burgers equation u_t + f(u)_x = u_(xx) + u_(xxt) on the halfline with the conditions u(0, t) = u_–, u(...We investigate the asymptotic behavior of solutions of the initial-boundaryvalue problem for the generalized BBM-Burgers equation u_t + f(u)_x = u_(xx) + u_(xxt) on the halfline with the conditions u(0, t) = u_–, u(∞, t) = u + and u_– 【 u_+, where the correspondingCauchy problem admits the rarefaction wave as an asymptotic states. In the present problem, becauseof the Dirichlet boundary, the asymptotic states are divided into five cases depending on the signsof the characteristic speeds f(u_±) of boundary state u_– = u(0) and the far fields states u_+ =u(∞). In all cases both global existence of the solution and asymptotic behavior are shown underthe smallness conditions.展开更多
基金The research was supported by three grants from the Key Project of the Natural Science Foundation of China (10431060)the Key Project of Chinese Ministry of Education (104128)the South-Central University For Nationalities Natural Science Foundation of China (YZY05008)
文摘In this article, authors study the Cauch problem for a model of hyperbolic-elliptic coupled system derived from the one-dimensional system of the rudiating gas. By considering the initial data as a small disturbances of rarefaction wave of inviscid Burgers equation, the global existence of the solution to the corresponding Cauchy problem and asymptotic stability of rarefaction wave is proved. The analysis is based on a priori estimates and L^2-energy method.
基金Supported by the National Natural Science Foundation of China (No.10171037, No. 10401012)
文摘We investigate the asymptotic behavior of solutions of the initial-boundaryvalue problem for the generalized BBM-Burgers equation u_t + f(u)_x = u_(xx) + u_(xxt) on the halfline with the conditions u(0, t) = u_–, u(∞, t) = u + and u_– 【 u_+, where the correspondingCauchy problem admits the rarefaction wave as an asymptotic states. In the present problem, becauseof the Dirichlet boundary, the asymptotic states are divided into five cases depending on the signsof the characteristic speeds f(u_±) of boundary state u_– = u(0) and the far fields states u_+ =u(∞). In all cases both global existence of the solution and asymptotic behavior are shown underthe smallness conditions.
