Abstract
Experimental and numerical analyses were carried out for the turbulent channel flow in 90° T-junction with sharp and various shape corners. The investigations were conducted for flow rate ratios of 0.2, 0.4, 0.6 and 0.8 (ratios between the flow rates in the branch and main channels) keeping the Reynolds number at 4.0×10^4. The results showed that rounding corner reduces the energy loss in the branching flow. The reduction was related to the flow separation at the upstream corner. Whereas the energy loss in the main flow remained unaffected.
