1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Is it possible to have a Mach number greater than 1 at the throat?

  1. Mar 5, 2012 #1
    I have a problem for my Gas Dynamics homework, in which the problem asks to solve for the Mach number at the throat of a converging-diverging nozzle.

    I assumed that the Mach at the throat should be equal to 1 since the professor said it was impossible to have a Mach number greater then 1 at the throat.

    After showing the same problem to a Graduate Student I work with he showed me that it is possible to have a Mach number greater then 1 at the throat through the area ratios.

    But after speaking to my professor a second time he has again said it is not possible.

    So my question is.. is it possible to have a Mach number greater than 1 at the throat.


    Oh the conditions for the problem are as follows:
    Mi=2
    Ai=20 cm^2

    Athroat=15cm^2

    Shock Area=22 cm^2
    Ae=25cm^2

    where gamma= 1.4

    according to the solutions Mach at the throat equals 1.662


    I assumed it was 1 but it was not correct.


    If someone could steer me in the right direction I'd appreciate it thanks!
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted



Similar Discussions: Is it possible to have a Mach number greater than 1 at the throat?
Loading...