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I have a total enthalpy ht=3000 kj/kg with velocity at inlet v1=20 ms-1, Speed of sound a1=562.5 ms-1 and outlet pressure P2 = 1 bar

With the formula ht=h*+(a*2/2) how do i calculate actual value at throat h* ?

NOTE: (by trial and error)

- I can take any guesses for enthalpy at throat and i start by considering h*=2800 Kj/kg
- Total enthalpy and entropy remains constant at 3000 Kj/kg and Entropy with 6.5 Kj/K
- ht-htinlet != 0 i.e Δ=0

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# Enthalpy at the throat of the nozzle

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