Stability of Transonic Contact Discontinuity for Two-Dimensional Steady Compressible Euler Flows in a Finitely Long Nozzle
Stability of Transonic Contact Discontinuity for Two-Dimensional Steady Compressible Euler Flows in a Finitely Long Nozzle
复制标题
有限长喷嘴中二维稳态可压缩欧拉流跨音速接触不连续稳定性
DOI:
10.1007/s40818-021-00113-2
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发表时间:
2020-12
期刊:
影响因子:
2.8
通讯作者:
Xiang Wei
中科院分区:
文献类型:
--
作者:
Huang Feimin;Kuang Jie;Wang Dehua;Xiang Wei
We consider the stability of transonic contact discontinuity for the two-dimensional steady compressible Euler flows in a finitely long nozzle. This is the first work on the mixed-type problem of transonic flows across a contact discontinuity as a free boundary in nozzles. We start with the Euler-Lagrangian transformation to straighten the contact discontinuity in the new coordinates. However, the upper nozzle wall in the subsonic region depending on the mass flux becomes a free boundary after the transformation. Then we develop new ideas and techniques to solve the free-boundary problem in three steps: (1) we fix the free boundary and generate a new iteration scheme to solve the corresponding fixed boundary value problem of the hyperbolic-elliptic mixed type by building some powerful estimates for both the first-order hyperbolic equation and a second-order nonlinear elliptic equation in a Lipschitz domain; (2) we update the new free boundary by constructing a mapping that has a fixed point; (3) we establish via the inverse Lagrangian coordinate transformation that the original free interface problem admits a unique piecewise smooth transonic solution near the background state, which consists of a smooth subsonic flow and a smooth supersonic flow with a contact discontinuity.
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DOI:
10.1137/050642976
发表时间:
2007-02
期刊:
SIAM J. Math. Anal.
影响因子:
--
作者:
Gui-Qiang G. Chen;Yongqian Zhang;Dianwen Zhu
通讯作者:
Gui-Qiang G. Chen;Yongqian Zhang;Dianwen Zhu
影响因子:
2.5
作者:
Jianfeng Cheng;杜力力;Wei Xiang
通讯作者:
Wei Xiang
影响因子:
0.8
作者:
Shuxing Chen
通讯作者:
Shuxing Chen
DOI:
--
发表时间:
2007
期刊:
--
影响因子:
--
作者:
Gui-Qiang G. Chen;C. Dafermos;M. Slemrod;Dehua Wang
通讯作者:
Gui-Qiang G. Chen;C. Dafermos;M. Slemrod;Dehua Wang
DOI:
10.1515/crll.1988.389.1
发表时间:
1988
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
--
作者:
G. M. Lieberman
通讯作者:
G. M. Lieberman