Axial and diametral velocity and pressure variations in a tube with a sudden restriction

Sudden geometric restrictions in internal flows produce strong spatial variations in velocity and pressure, both along the flow direction and across the cross-section. These effects are central to the analysis of internal flow behaviour in many engineering applications.
Go to the profile of Kamel Bousnina
Kamel Bousnina
Enseignant, ISET GABES
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The results illustrate the variation of velocity and static pressure along the tube centreline, from the upstream region to the downstream recovery zone. A marked increase in axial velocity is observed at the location of the sudden restriction, accompanied by a significant pressure drop.

In addition, velocity profiles extracted along the diameter at the restricted section reveal the spatial redistribution of the flow across the cross-section, highlighting the effects of geometric confinement on the internal velocity field.

Together, these axial and diametral representations provide a clear and physically meaningful description of the flow behaviour, demonstrating how CFD simulations can support both engineering analysis and educational applications in fluid mechanics.

Go to the profile of Kamel Bousnina
Kamel Bousnina (Dr.)
Enseignant, ISET GABES

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Mechanical Power Engineering
Technology and Engineering > Mechanical Engineering > Mechanical Power Engineering
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