Subsonic non-isentropic Euler flows with large vorticity in axisymmetric nozzles

摘要

In this paper, we investigate the effects of vorticity for smooth subsonic non-isentropic Euler flows in infinitely long axisymmetric nozzles. It is a sequel to B. Duan and Z. Luo (2013) [13] on non-isentropic Euler system. In [13], the authors obtained the unique existence of a smooth subsonic solution with restriction on the smallness of Bernoulli's function in the upstream. The smallness assumption is sufficient to prevent the appearance of singularity, however, it leads that the vorticity is also small. The purpose of this paper is to remove such restriction on the smallness of the vorticity. (C) 2015 Elsevier Inc. All rights reserved.