Development of Flow within a Diffusing C-Duct –Experimental Investigation and Numerical Validation
نویسندگان
چکیده
Experimental investigation of flow development within a rectangular 90o curved diffusing C-duct of low aspect ratio and area ratio of 2 was carried out and the threedimensional computational results are then compared with the experimental results for numerical validation. All measurements were made in a turbulent flow regime (Re = 2.35x10 5 ), based on the duct inlet hydraulic diameter (dh = 0.0666m) and mass averaged inlet velocity of 60m/s. Wall pressures were measured through wall pressure taps. The mean velocities, static and total pressures at six cross-sectional planes (along the centreline of the diffuser) were obtained using a pre-calibrated three-hole pressure probe in null mode. The flow was numerically simulated by using different viscous models available in the commercial CFD software FLUENT 6.3. The experimental inlet and boundary conditions were used as input for the computation and validation of the numerical
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