Numerical simulation on JAG-type corrugated plate flow heat transfer characteristics considering physical property changes and shell heat transfer

This research considers the combined effects of changes in fluid properties and shell heat transfer. The realizable k-epsilon turbulence model combined with the enhanced wall function is used to numerically simulate the flow and heat transfer characteristics of a new plate-shell heat exchanger plate side, which was verified to be accurate in combination with previous research results. Focus was placed on the analysis concerning the flow heat transfer characteristics for different corrugation depths at different inlet velocities. It was found that increasing the corrugation depth can make the fluid distribution tends to be uniform heat transfer performance increases, but the increase in velocity will have the opposite effect on the heat transfer performance. Furthermore, field synergy theory reveals the synergistic distribution regularities of the velocity field with the temperature field and pressure field. Consecutive vortex structures are formed along the grooves, and the flow in the core region of the corrugated channels is similar to the heat flow, reducing the synergistic ability among the three fields makes the heat transfer less effective. These findings contribute to understanding heat transfer in similar scenarios, especially in energy engineering and thermal management.