Question
Download Solution PDFWhat is the approximate length of the converging cone of a venturimeter? 'D' is the diameter of the inlet section and 'd' is the diameter of the throat.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
A Venturi meter is a device used for measuring the rate of flow of a fluid flowing through a pipe.
The working of the venturi meter is based on the principle of Bernoulli’s equation.
The Venturi meter is divided into 3 parts:
convergent cone, divergent cone, and throat.
Convergent cone: It is the region where the cross-section emerges into a conical shape for the connectivity with the throat region. The converging region is attached to the inlet pipe and its cross-sectional area decreases from beginning to end.
One side is attached with the inlet and its other side is attached to the cylindrical throat.
The angle of convergence is generally 20-22 degrees and its length is 2.7(D-d). Here D is the diameter of the inlet section and d is the diameter of the throat.
Additional information:
Throat: It is the middle part of the venturi meter and has the lowest cross-sectional area. The length is equal to the diameter of the throat. Generally, the diameter of the throat is 1/4 to 3/4 of the diameter of the inlet pipe.
The diameter of the throat remains the same throughout its length. The diameter of the throat cannot reduce to its minimum suitable value because if the cross-sectional area decreases velocity increases and pressure decreases.
Diverging cone: Diverging section is the third part of this device. One side it is attached to the outlet pipe. The diameter of this section is gradually increasing.
The diverging section has an angle of 5 to 15 degrees. The diverging angle is less than the converging angle due to the length of the diverging cone is larger than the converging cone.Last updated on Aug 1, 2024
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