PRESSURE LOSS AND HEAT TRANSFER THROUGH MULTIPLE ROWS OF SHORT PIN FINS
Results are presented showing performance in
terms of pressure loss and heat transfer for arrays
of short pin fins set in a high aspect ratio duct.
Seven array configurations were fabricated and
tested, typical of those used for heat transfer
augmentation in gas turbine airfoil cooling. All
configurations have uniform regular pin spacing
with alternate rows in the streamwise direction
staggered one-half the transverse pitch. The short
length of the pins dictates that the uncovered duct
walls are a significant fraction of the total heat
transfer area. Comparison is made between the
present short pin results and established tube bank
performance where the tube surfaces account for all
the heat transfer area.