A single phase, incompressible turbulent
flow through a 90º pipe bend
with/without guide vane conditions has been studied here. The present work
deals with the numerical simulation to investigate the change in flow
separation and velocity distribution at the downstream
section due to the effect of the guide
vane. The k-? turbulence model has been adopted for simulation purposes to obtain the
results. After the validation of existing experimental and numerical results, a
detailed study has been performed for three different Reynolds number and four
different positions of the guide vane. The value
of the Curvature ratio (Rc/D) has been considered
as one
factor for the present study.
The curvature ratio can be defined as the
ratio between the bend curvature radius and hydraulic diameter of the pipe. The
results obtained from the present study have been presented in graphical form.
A flow separation region has been found at the bend outlet for flow through 90º pipe bend without the guide vane. This flow separation region was
absent for the cases which dealt with
the flow through 90º pipe bend with the guide
vane. Velocity distribution at four different downstream positions for
different cases and different Reynolds numbers have been compared and reported in the present study
