An ideal gas in a reservoir has a specific stagnation enthalpy of $h_{0}$. The gas is isentropically expanded to a new specific stagnation enthalpy of $\frac{h_{0}}{2}$ and velocity $u$. The flow is one-dimensional and steady. Then $\frac{u^{2}}{h_{0}}=$_____________

An ideal gas in a reservoir has a specific stagnation enthalpy of $h_{0}$. The gas is isentropically expanded to a new specific stagnation enthalpy of $\frac{h_{0}}{2}$ and velocity $u$. The flow is one-dimensional and steady. Then $\frac{u^{2}}{h_{0}}=$_____________

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