Comparison of numerical results using the SST k–x
turbulence model and the RNG k–e turbulence model
with experimental results showed that the SST k–x
turbulence model is more suitable for numerical simulation
of convection heat transfer in channels with
angled ribs on one wall.
(2) For the given geometry with ribs 4 mm apart on one
wall, the channel with 60 ribs had the best heat
transfer performance, the channel with 0 ribs had
the least pressure drop, and the channel with 20 ribs
had the best thermal/hydraulic performance.
(3) For the given geometry with 20 ribs on one wall, the
channel with ribs 1 mm apart had the best heat transfer
performance with the smallest spacings giving best
heat transfer performance, the channels with 4 mm or
6 mm apart had the least pressure drop, and the channels
with ribs 1 mm or 2 mm apart had the best thermal/
hydraulic performance.