Rj. Goldstein et al., CONVECTIVE MASS-TRANSFER AND PRESSURE LOSS CHARACTERISTICS OF STAGGERED SHORT PIN-FIN ARRAYS, International journal of heat and mass transfer, 37, 1994, pp. 149-160
The effect of fin shape on the mass transfer and pressure loss of a te
n-row staggered short pin-fin array in fully developed approaching flo
w is investigated experimentally using three different fin shapes. The
Reynolds number, based on approach-velocity and fin diameter, ranges
from 3000 to 18 000. The fin shape affects the row-by-row variation of
Sherwood number. The results indicate that the stepped-diameter circu
lar fin arrays have not only a larger mass transfer coefficient, but a
lso a smaller pressure loss compared to a uniform-diameter circular fi
n array. In stepped-diameter circular fin arrays, the effect of step-l
ength-to-total-length ratio on Sherwood number is small, but the total
mass transfer rate and pressure loss change significantly with this r
atio, owing to differences in mass transfer area and free flow area, r
espectively.