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<br />3. Specific energy and discharge <br /> <br />a. The concepts of specific em~rgy and specific discharg'3 are <br />very powerful analytical techniques in hydraulics. <br /> <br />b. Time does not permit review here. See HIRE or HDS-4 <br />"Introduction to Highway Hydraulics" t'or explanatic)n and <br />applications. <br /> <br />4. Momentum Equation (applied to hydraulic jump) <br /> <br />Y2 <br />Y1 <br /> <br />2 <br />8Fr1)- 1 <br /> <br />- f<1 + <br /> <br />2 <br /> <br /><ID <br />I <br /> <br /> <br />v;- --- <br /> <br />~ <br /> <br />MOMENTUM CONCE:PT <br /> <br />= <br /> <br />Fr = <br /> <br />v <br />f9Y <br /> <br />Froude Number <br />Fr < 1 subcritical flow <br />Fr = 1 critical <br />Fr > 1 supercritical flow <br /> <br />3.5 <br />