*Associate Professor, Department of Mechanical Engineering, Wolaita Sodo University, Ethiopia
**Dean, College of Engineering, Wolaita Sodo University, Ethiopia
***Head, Department of Mechanical Engineering, Wolaita Sodo University, Ethiopia
Numerically solved for Laminar two-dimensional sudden expansion flow using nano fluid. Effect of Reynolds number, nano particle volume fraction with base fluid and different nano materials are tested and the solution procedure is validated by benchmark results. Four different nano particles are tested. It is found that when volume fraction is increased,recirculation eddy size is reduced. The bottom wall and top wall reattachment length is increased linearly while increasing Reynolds number. Results presented for both bottom and top wall reattachment length, stream line contour and skin friction coeffcient. Denser materials produce larger eddies. It is found that volume fraction influences the reattachment length and symmetry of the vortices. The skin friction coeffcient values are sensitive to volume fraction.
Flow separation, Rrecirculation, Nanofluid, Laminar flow, Nano materials, Reattachment length, Friction Coefficient, Volume fraction, Reynolds number
