Question: An explosion has happened at t= 0 sec. in a long tunnel. After the explosion (equivalent to rapture of the diaphragm) the pressure and density

An explosion has happened at t= 0 sec. in a long tunnel. After the explosion (equivalent to rapture of the diaphragm) the pressure and density increase at the left to high levels, 100L Rp p= , 100L R = . The shock has already passed the location x=2500 m at t=2 sec. The velocity behind shock was measured, Up = U3 = 547 m/s. The conditions in the tunnel before the explosion and ahead of the shock are p1 = 1 atm, and 3 1 1.25 /R kg m = =

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