Blade To Gas Speed Ratio
The blade-to-gas speed ratio can be expressed in terms of the isentropic stage terminal velocity c0.
σs=u2/c0=-½
for β2=90o
σs=0.707
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Variation of stage efficiency of an IFR turbine with blade-to-isentropic gas speed ratio
Read more about this topic: Radial Turbine
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