Research Article

Influences of Flow Attack Angles and Flow Directions on Heat Transfer Rate, Pressure Loss, and Thermal Performance in Heat Exchanger Tube with V-Wavy Surface

Figure 10

Relations of f/f0 with Re for the heat exchanger tube inserted with the V-wavy surface for (a) V-Downstream and (b) V-Upstream at the laminar regime.
(a)
(b)