The Influence of the Punched Delta Wings on Flow Pattern and Heat Transfer Characteristic in a Fin-and-Oval-Tube Heat Exchanger

Figure 6

Temperature contours in transverse planes for (a) PR = 2, (b) PR = 4, and (c) PR = 6 at Re = 1500 and = 30° with wing tip pointing downstream.

(a)

(b)

(c)