A water jet pump has an area Aj = 0.06 ft2 and a jet velocity υj = 90 fps, which entrains...

A water jet pump has an area Aj = 0.06 ft2 and a jet velocity υj = 90 fps, which entrains a secondary stream of water having a velocity υs = 10 fps in a constant-area pipe of total area A = 0.6 ft2. At section 2, the water is thoroughly mixed. Assuming one- dimensional flow and neglecting wall shear

a. find the average velocity of mixed flow at section 2;

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b. find the pressure rise (P2 – P1), assuming the pressure of the jet and secondary stream to be the same at section 1.