Fig 1 Geometry

Fig 2 Mass flow at inlet

Fig 3 Mass flow at outlet

Fig 4 Avg velocity at inlet

Fig 5 Avg velocity at outlet

Fig 6 Avg temp at inlet

Fig 7 Avg temp at outlet

Fig 8 Static pressure at inlet

Fig 9 Static pressure at outle

Setup:

Fig 9 Paraview plot of pressure variation and velocity vectors

Back flow case has been studied successfully and outputs are obtained by creating boundary and flagging it first. Then each boundary is assigned as inflow, outflow, 2 D and wall. Pressure difference is created between inflow and outflow to obtain flow. Turbulence model is enabled and included in case setup.

Conclusion:

Outputs are obtained for different grid sizes and postprocessed using Cygwin software. Also 3D plots are studied using Paraview.