An axial flow turbomachine rotor involves the upstream (1) and downstream (2) velocity triangles shown in Fig. P5.88. Is this turbomachine a turbine or a fan? Sketch an appropriate blade section and determine energy transferred per unit mass of fluid.

Figure P5.88

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|W =|w2| W U = 30 ft/s W2 U = 30 ft/s 14 V = 20 ft/s 60