Abstract
Vortex Generators (VGs) are an innovative heat transfer enhancement in traditional heat exchangers. With this technique, the study investigates the combined impact of upper-lower Staggered Circular Welding Spot Patterns (SCWSP) and VGs, termed SCWSP-VGs, in a periodic enhanced Pillow-plate type heat exchanger (PPHX) using ANSYS Fluent 18.1. Numerical results reveal SCWSP-VGs induce a periodic velocity profile and opposite elliptical recirculation vortex (OERV) turbulence, significantly improving thermo-hydrodynamics compared to smooth enclosures. In addition, the performance of the PPHX is described or presented in the graphical form in terms of Colburn j-factor, Nu/Nu0, f/f01/3, Reynolds analogy factor, normalized drag coefficient ratio (Cx/Cx0)0.33, and (Nu/Nu0)/(f/f0)1/3. The maximum Nu and performance evaluation criterion (PEC) are improved by 41.34% and 1.68 in the dh/XL = 0.076 and 0.043 at Re = 1000, respectively.
Sign-in/Register to access full text options 
Free) 
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 call
