So I am studying Gas dynamics and I know the math regarding Normal and Oblique shockwaves, but I am not sure why would one occur and not the other. Is there a rule when normal shocks will occur or when oblique?

I would appreciate some help.

  • $\begingroup$ How would this relate: engineering.stackexchange.com/q/34943/10902 ? $\endgroup$
    – Solar Mike
    Apr 3, 2020 at 6:38
  • $\begingroup$ @SolarMike this is another question of mine which I still dont have an answer to. but thanks for pointing out. $\endgroup$
    Apr 3, 2020 at 6:56
  • $\begingroup$ Check out how the shockwave hits the surface. $\endgroup$
    – Solar Mike
    Apr 3, 2020 at 7:13

1 Answer 1


When a supersonic flow is turned towards itself,i.e., the supersonic flow is forced to change its flow direction, this generates oblique shock waves. If it is not so, then normal shock wave would be generated.


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