- Problem 4 6 Points Air Leaves The Nozzle Of An Axial Flow Turbine Stadat 27 This Is The Angle Between The Vertical 1 (410.39 KiB) Viewed 14 times
Problem 4. (6 points) Air leaves the nozzle of an axial-flow turbine staDat 27° (this is the angle between the vertical axis and velocity component VI), at an axial flow velocity of 83 m/s. The Sotor blade speed at the mean radius is also 83 m/s. If the reaction of the stage is 50% (a) Draw the velocity triangles at both the inlet and outlet of the rotor. (b) Find the rotor blades angles for and is ♡ Sebution: Given: U R Vat m's 83 deg 27 in's 83 50 a) Find the rotor blades angles pbl and 362 Find VI - Vlasin alpha l. vi 182.823 t's point) WI can be found from velocity profile isng cosaic lav 1 = (V12 = 112 - 2V1 u cos alpha 103 WE- 115.21 m's point) I cos Bb] =Vla/WI SO ros BI 11.720.45 Bbl - 0.76635 radiants 43.91 degrees point) Because R=0.5, then V2 = W1 = V2 115.22 m's (1 point) Because R-0.5, then W2 - VI= W2 182.82 by's point) So Bb2 - 90-alpha BO slegrees point)