Abstract
AbstractThe computational study of heat transfer characteristics over a flat surface under the impingement of an air jet is the most advanced scheme in the research field of convective heat transfer technology. This research aims to construct the semiempirical relations for predicting the magnitude of local Nusselt number (Nu) against the various impinging and target surface parameters. The impinging parameter includes Reynolds number (Re) and nozzle‐target spacing (Z/d), while the target surface parameter represents the Prandtl number (Pr) and nondimensional geometric thickness (t/d) of the target surface. The graphical representation of Nu versus r/d for different Pr and t/d justifies the saturation in the Nusselt profile beyond a critical value. The critical limit of Pr × t/d, reported in this study, rounds to 0.012. Hence, two sets of empirical relations for Pr × t/d < 0.012 and Pr × t/d > 0.012 must be defined. The semiempirical relations for Pr × t/d > 0.012 is only a function of impinging parameters, since the variation in Pr and t/d does not affect the Nu profile beyond this range. This work takes an initiative in reporting the semiempirical power law relations, which represent the local Nu magnitude within the range of Pr × t/d < 0.012. The reported empirical relations are the functions of Pr, t/d, Z/d, Re, and r/d.
Sign-in/Register to access full text options 
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.
