. Applied thermodynamics for engineers. Fig. 248. Art. 527. — Velocity Fig. 249. Arts. 527, 532, 534. — VelocityCorrected for Friction. 374 APPLIED THERMODYNAMICS 528. Bucket Angles and Work Done. In Fig. 250, the absolutevelocities v and Y may be resolved into components ab and db in thedirection of rotation, and ae and de at rightangles to this direction. The former compo-nents are those which move the wheel; the lat-ter produce an end thrust on the shaft. Nowab 4- bd (Jyd being negative) is the change invelocity of the fluid in the direction of rotation ;it is the acceleration; th

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. Applied thermodynamics for engineers. Fig. 248. Art. 527. — Velocity Fig. 249. Arts. 527, 532, 534. — VelocityCorrected for Friction. 374 APPLIED THERMODYNAMICS 528. Bucket Angles and Work Done. In Fig. 250, the absolutevelocities v and Y may be resolved into components ab and db in thedirection of rotation, and ae and de at rightangles to this direction. The former compo-nents are those which move the wheel; the lat-ter produce an end thrust on the shaft. Nowab 4- bd (Jyd being negative) is the change invelocity of the fluid in the direction of rotation ;it is the acceleration; the force exerted perjjound is then (ab ^bd)-^g= (ab ^ bd) -r- = (vcos a+ I^cos^) -V- This force is exerted through the distance u the work done 2jer pound of steam is then This, from Art. 526, equals

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