This document is a study guide for a fluid mechanics course. It contains an introduction to orifices, classifications of orifices, related hydraulic terms, and methods for experimentally determining the hydraulic coefficient of an orifice. It provides examples of flow through large orifices and submerged orifices. The document also includes example problems solving for discharge through orifices under different pressure conditions.

1. Fluid Mechanics (2141906)
B.E. MECH – Sem IV th
Prepared by,
Patel Shrey B
(170953119031) B2 Mechanical
Guided by,
Mr. Milan Vachhani
(Asst. Prof. of Mechanical Deptt.)

2. CONTENT
• Introduction: Orifice
• Classification of Orifice
• Hydraulic Terms Related with Orifice
• Experimental Determination Of Hydraulic Coefficient For Orifice
• Examples
• Flow Through large orifice
• Flow Through Submerged Orifice
• Examples
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3. INTRODUCTION
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4. Classification of Orifice
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8. Hydraulic Terms Related With Orifice
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17. Experimental Determination Of Hydraulic
Coefficient For Orifice
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22. (2) Determination of Coefficient of discharge (Cd):-
(i) Volumetric Method
(ii) Gravimetric Method
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33. Water Discharged Through Large Orifice
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35. Water Discharged Through Fully Submerged Orifice
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37. Water Discharged Through Fully Submerged Orifice
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38. (4) Flow takes place between two tank a & B under pressure through an orifice connecting the tank as
shown in fig. Both the tank contains oil having specific gravity 0.82 & level of oil in tank A is 50 cm higher
than that in tank B. The load of 12 kN is placed on piston in tank A while tank B is closed & contains
entrapped air at pressure 2.90 bar. If tank A is c/s of 0.65 m2 & orifice is 8 cm in diameter. Calculate
discharge through orifice. If Cd = 0.75
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