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发表时间:2019-08-02 阅读次数:667次
报告题目: On a class of hyperbolic totally characteristic boundary problems with an additional degeneracy
报 告 人:Prof. Ingo Witt
报告人所在单位:University of Göttingen, Germany
报告日期:2019-08-02 星期五
报告时间:14:00-15:00
报告地点:光华东主楼1501
  
报告摘要:

We study hyperbolic totally characteristic boundary problems with an

additional degeneracy appearing at the edge formed of boundary and initial hypersurface. The spacetime domain has coordinates , the

prototypical example is provided by the second-order scalar differential operator

, where . The solution to the Cauchy problem

is found in a class of adapted 2-microlocal spaces. (No boundary conditions are

required due to the totally characteristic boundary.) Such problems arise when steady supersonic flow turns a sufficiently large bend and a vacuum region separates from the flow.

This is joint work with Ruan Zhuoping (NJU, Nanjing).

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本年度学院报告总序号:163

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