Abstract
In this paper, under the generalized conservation condition of mass flux in a unbounded domain, we are concerned with the global existence and stability of a perturbed subsonic circulatory flow for the twodimensional steady Euler equation, which is assumed to be isentropic and irrotational. Such a problem can be reduced into a second order quasi-linear elliptic equation on the stream function in an exterior domain with a Dirichlet boundary value condition on the circular body and a stability condition at infinity. The key ingredient is establishing delicate weighted Hölder estimates to obtain the infinite behaviors of the flow under physical assumption.
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Cui, D., Li, J. On the existence and stability of 2-D perturbed steady subsonic circulatory flows. Sci. China Math. 54, 1421–1436 (2011). https://doi.org/10.1007/s11425-011-4226-5
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DOI: https://doi.org/10.1007/s11425-011-4226-5