Abstract
In this work, the effect of angle of attack [Formula: see text] of the discrete V-pattern baffle on thermohydraulic performance of rectangular channel has been studied experimentally. The baffle wall was constantly heated and the other three walls of the channel were kept insulated. The experimentations were conducted to collect the data on Nusselt number [Formula: see text] and friction factor [Formula: see text] by varying the Reynolds number ( Re) = 3000–21,000 and angle of attack [Formula: see text] from 30° to 70°, for the kept values of relative baffle height [Formula: see text], relative pitch ratio [Formula: see text], relative discrete width [Formula: see text] and relative discrete distance [Formula: see text]. As compared to the smooth wall, the V-pattern baffle roughened channel enhances the Nusselt number [Formula: see text] and friction factor [Formula: see text] by 4.2 and 5.9 times, respectively. The present discrete V-pattern baffle shapes with angle of attack [Formula: see text] of 60° equivalent to flow Reynolds number of 3000 yields the greatest thermohydraulic performance. Discrete V-pattern baffle has improved thermal performance as compared to other baffle shapes’ rectangular channel.
Highlights
Energy is the basic ingredient needed to sustain life and development
The effect of angle of attack on Nusselt number and friction factor in a discrete V-pattern baffle channel was examined by plotting the baffle Nusselt number and friction factor as a function of Reynolds number
The Nusselt number rises with rise in Reynolds number as expected, due to rise in turbulent intensity with streamrise in Reynolds number, which leads to superior heat transfer
Summary
Energy is the basic ingredient needed to sustain life and development. Social, cultural and economic development of the people is seen to a great extent by the amount of per capita energy consumed and by the potency of the technological means with which it is converted to work.[1,2] Conventionally, energy is being extracted from fossil fuels, large hydroelectric systems and fuel wood. Khanoknaiyakarn et al.[15] carried out an experimental study on Nusselt number and friction factor using V-pattern baffles on one broad heated wall of large aspect ratio.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
