Orifice Discharge Apparatus
The Orifice Discharge accessory consists of a cylindrical acrylic tank which has an orifice fitted in the base. A traverse assembly is provided which enables a pitot tube to be positioned anywhere in the jet.Attached to this Pitot tube is a sharp blade which can be traversed across the jet to accurately measure the jet diameter and the vena contracta diameter and so determine the contraction coefficient.The pitot head and the total head across the orifice are shown on manometer tubes adjacent to the tank.
EXPERIMENTS
- Determining the contraction and velocity coefficients.
- Calculating the discharge coefficient.
- Investigations into a variety of orifices over a range of flow rates.
- Determination of the various coefficients over a range of flow rates to demonstrate the influence of Reynolds number.
- Study of the characteristics of different orifices.
Features
- Consists of Cylindrical tank with an adjustable diffuser that demonstrates flow through different orifices for different flow rates.
- Allow students to measure: Decrease in flow, Contraction of the stream and Energy loss.
- Having facility to use the apparatus to study different shapes of orifice.
- Having a transparent cylindrical tank, with a mounting in the base for different orifices.
- The apparatus will be supplied with a sharp-edged orifice already mounted.
- The flow rate and an overflow pipe will set the water level.
- Water leaves the tank through the orifice.
TECHNICAL SPECIFICATION
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Standard orifice |
Sharp-edged 13mm diameter. |
|
Circular orificedimensions |
Length 13 mm, with 60° contraction and 60° diverging section Length 13 mm, with 29 mm diameter bellmouth approach to 60° diverging section. Length 60 mm, with 29 mm diameter bellmouth approach to 51 mm long parallel. Length 60 mm, with 29 mm diameter bellmouth approach, to 30° diverging section and 25 mm long parallel section. |
|
Triangular orifice dimensions |
Each side nominally 12.1 mm, including 1.5 mm corner radius. |
|
Square orifice dimensions |
9 mm square |
|
Orifice material |
Aluminium |
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Required accessories |
Printed operation manual should be supplied |
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