Acta mathematica scientia,Series A ›› 2025, Vol. 45 ›› Issue (2): 359-370.

Previous Articles     Next Articles

The Well-Posedness of Spherically Symmetric Solutions to the Steady Euler Equations with Gravitation

Qiming Wang1(),Xuemei Deng2,*()   

  1. 1College of Science, China Three Gorges University, Hubei Yichang 443002
    2Three Gorges Mathematical Research Center, China Three Gorges University, Hubei Yichang 443002
  • Received:2024-04-16 Revised:2024-10-05 Online:2025-04-26 Published:2025-04-09
  • Contact: Xuemei Deng E-mail:qiming.wang@ctgu.edu.cn;dxuemei@ctgu.edu.cn
  • Supported by:
    NSFC(12061080)

Abstract:

This paper studies the existence and uniqueness of transonic shock solutions to the steady compressible Euler equations with gravity in a three-dimensional spherically symmetric divergent nozzle. Assuming that the influence of gravity on the fluid is sufficiently small and the supersonic initial conditions are given at the entrance, it can be proved that when the pressure p at the exit falls in certain range, there exists a unique transonic shock solution within the nozzle by demonstrating that the pressure at the outlet is a strictly monotone function of the shock location.

Key words: transonic solution, Bernoulli's function, Euler equations, spherically symmetrical flow, gravity

CLC Number: 

  • O175.2
Trendmd