OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
Fig 3.4: Velocity distribution in the flow field (elliptical cross-section)-side view
Fig 3.5: Velocity distribution in the flow field (elliptical cross-section)-rear view
Fig 3.6: Velocity distribution in the flow field (rectangular cross section) - side view
All three cross sections have the same inlet and outlet area. The inlet area being 817.2 square units and the
outlet area being 426.2 square units. The velocity for the rectangular cross section comes out to be highest equal
to 1.014* 10^3 m/s followed by circular and then elliptical. However, the velocity distribution for the
rectangular and circular profile is not uniform and velocity is highest only at the periphery. In contrast, the
velocity distribution for the elliptical profile is more uniformly distributed at the rear cross section. This can be
attributed to the fact that the passage in case of elliptical section is more constricted than the other two for any
cross section of the same area. Thus it can be easily imagined that the polyhedrons used to generate mesh in
case of elliptical are more in number and finer than rectangular or circular which leads to a uniform velocity.
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