Transonic Shocks In Multidimensional Divergent Nozzles

Details Transonic Shocks In Multidimensional Divergent Nozzles Transonic Shocks In Multidimensional Divergent Nozzles

2010-03-23

arxiv.org/abs/1003.4335v2

Mathematics

Analysis of PDEs

54 pages

Scientific paper

We establish existence, uniqueness and stability of transonic shocks for steady compressible non-isentropic potential flow system in a multidimensional divergent nozzle with an arbitrary smooth cross-section, for a prescribed exit pressure. The proof is based on solving a free boundary problem for a system of partial differential equations consisting of an elliptic equation and a transport equation. In the process, we obtain unique solvability for a class of transport equations with velocity fields of weak regularity(non-Lipschitz), an infinite dimensional weak implicit mapping theorem which does not require continuous Frechet differentiability, and regularity theory for a class of elliptic partial differential equations with discontinuous oblique boundary conditions.

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