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This work presents the results of an experimental study of thermo-hydraulic  performance of rectangular channel having discrete V-pattern baffle attached  on the broad wall. Measurements have been carried out for the aspect channel  ratio of 10, Reynolds number from 3000 to 21000, relative baffle height value  of 0.50, relative baffle pitch value of 1.5, relative gap width value of 1.0,  flow attack angle value of 60°, relative discrete distance values of 0.26 to  0.83. The heat transfer and friction factor data obtained were compared with  the data obtained from a smooth wall channel under similar operating  conditions. In comparison to the smooth wall channel the discrete V-pattern  baffle channel enhanced the Nusselt number and friction factor by 3.89 and  6.08 times, respectively. The overall thermal performance parameter is found  superior for the relative discrete distance of 0.67. Discrete V-pattern  baffle roughness shape has also been shown to be overall thermal performance  higher in comparison to other continuous (without discrete) V-pattern baffle  shape rectangular channel.

Experimental investigation on overall thermal performance of fluid-flow in a rectangular channel with discrete V-pattern baffle