Effects of Inlet Centre Line Turbulence on the Turbulent Flow through an Axi-symmetric Sudden Expansion

The turbulent fluid flow through sudden expansion passage has both fundamental scientific interest and numerous practical applications. The engineering applications such as the separated flow associated with pipelines, dump combustors, different ducting devices etc. are examples of the turbulent flow through the sudden expansion. In the present analysis the effect of centre line turbulence on reattachment length in an axi symmetric sudden expansion flow has been investigated. The change of size and strength of recirculation bubble has been studied, which is directly involved with reattachment length.