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Experiment (5) Flow through small orifice

Experiment (5) Flow through small orifice . By: Eng. Motasem M. Abushaban. Eng. Fedaa M. Fayyad . Introduction . An Orifice is an opening in the side or base of tank or reservoir through which fluid is discharge in the form of a jet.

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Experiment (5) Flow through small orifice

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  1. Experiment (5)Flow through small orifice By: Eng. Motasem M. Abushaban. Eng. Fedaa M. Fayyad.

  2. Introduction • An Orifice is an opening in the side or base of tank or reservoir through which fluid is discharge in the form of a jet. • The discharge will depend upon the head of the fluid (H) above the level of the orifice. • The term small orifice means that the diameter of the orifice is small compared with the head producing flow.

  3. Purpose • Studying the flow through small orifice discharging to atmosphere. • Calculating the coefficient of discharge (Cd). • Calculating the coefficient of velocity (Cv). • Calculating the coefficient of contraction (Cc)

  4. Theory

  5. , Theory • Two reasons for the difference between theoretical and actual discharge. • First: The velocity of jet is less than the velocity calculated because there is losses of energy between point A and B. ,Cvis the coefficient of velocity

  6. Theory • Second: The stream line of the orifice contract reducing the area of flow. (Vena Contraction) Where. Ccis the coefficient of contraction. Cd in the range [0.6-0.65]

  7. Measurement of Jet Trajectory

  8. calculation

  9. Data & Results:

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