CONTENTS 



CHAPTER IV. 



PAGE 



illi'- Thforrm . . .... 73 



Elementary Proof of Bernoulli's Theorem .. 75 



A pplirat ion to Unsteady Motion .. 76 



Experimental Verification ' < 



Flow in Converging Passages Radial Flow . . 79 



Sudden Enlargement of Section .. .... 82 



(Jradual Enlargement of Section, Trumpet-Shaped and Compound 



Pipes -.84 



Sudden Contraction of Area ...... . . 93 



I liaphragiM in Circular Pipe .. .. .. . . ..94 



Change in Pressure across Stream Tube .... ..95 



K Motion Forced, Free and Compound . . 95 



CHAPTER V. 



Fl'iw from a Small Orifice Free and Suppressed Contraction . . . . 102 



Determination of Coefficients of Velocity, Discharge, and Contraction . . 108 



Equation of Momentum .. .. .. .. .. .. .. Ill 



Borda's Mouthpiece .. .. . . ..112 



Orifice in Flat Plate .. ..115 



Hell-mouthed Orifice .. ..119 



Velocity of Approach . . . . . . . . . . . . . . 120 



Time of Discharge from Small Orifices .. ..121 



47. Form of Effluent Streams . . . . . . . . 123 



CHAPTER VI. 



48. Large Orifices .... .... . . . . 126 



49. Rectangular Orifice . . . . 128 



."n. c irrular Orifice .... .. .. ..130 



.0 1 . Submerged Orifice . . . . . . 132 



52. Law of Comparison for Orificco ..135 



53. Notches and Weirs . . 137 



.") }. Theoretical Formula for Flow over a Notch . . . . . . . . . . 138 



Kxp'-rimi'iital Results and Formulae .. .. .. .. .. .. 141 



.'ill.. Triangular Notch 151 



.")!c. Trapezoidal Notch. . .. .. .. .. .. .. 155 



.")"). Submerged Weirs . . . . . . . . . . . . . . . . . . 157 



""> Broad Greeted Weira .. .. .. .. .. .. ., .. 159 



./T. National Formula for Broad Crested Weirs .. .. .. .. .. 166 



$8, Kise in Surface Level produced by a Dam .. .. .. . .. 167 



Use of Weir as a Measuring Appliance . . . . . . . . 168 



'" Time <>i 1 u>charge through Orifices and Notches 170 



CHAPTER VII. 



Fluid Friction .. ...... .. 174 



I i irtion . . 179 



