The Mechanical Engineering Handbook



Temperature Ratio Across a Normal Shock

Temperature Ratio Across a Normal Shock Equation



$$ \frac{T_2}{T_1} = \frac{ (1+\frac{\gamma - 1}{2} M_1^2) (\gamma - 1) M_1^2 + 2 }{(\gamma + 1)^2 M_1^2} $$ where:

T1   =   Static temperature before the shock   (K)

T2   =   Static temperature after the shock   (K)

M1   =   Mach Number   (Dimensionless)

γ   =   Ratio of Specific Heats   (Dimensionless)


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Equation Assumptions



  • Flow is steady.
  • Flow is one-dimensional.
  • Shock is normal to flow direction.
  • The fluid behaves as an ideal gas.
  • Process is adiabatic.