TY - GEN
T1 - Effect of vertical baffle installation on forced convective heat transfer in channel having a backward facing step
AU - Heshmati, Amirhossein
AU - Mohammed, Hussein A.
AU - Parsazadeh, Mohammad
AU - Fathinia, Farshid
AU - Wahid, Mazlan A.
AU - Sies, Mohsin M.
AU - Saat, Aminuddin
PY - 2013
Y1 - 2013
N2 - In this study, forced convective heat transfer is considered in channel over a backward facing step having a baffle on the top wall. Four different geometries with different expansion ratios and different type of baffles are numerically investigated. The study clearly shows that the geometry with expansion ratio 2 and solid baffle has the highest Nusselt number compared to other geometries. Considering both Nusselt number and skin friction coefficient for all four geometries clearly illustrated an increase in average Nusselt number by increasing the expansion ratio. This study clearly shows that mounting a slotted baffle at the top wall instead of a solid baffle caused a decline in average Nusselt number. It is also found that for geometry with expansion ratio of 3 and a slotted baffle on the top of the channel, skin friction coefficient in both bottom wall and step wall has its minimal compared to other geometries.
AB - In this study, forced convective heat transfer is considered in channel over a backward facing step having a baffle on the top wall. Four different geometries with different expansion ratios and different type of baffles are numerically investigated. The study clearly shows that the geometry with expansion ratio 2 and solid baffle has the highest Nusselt number compared to other geometries. Considering both Nusselt number and skin friction coefficient for all four geometries clearly illustrated an increase in average Nusselt number by increasing the expansion ratio. This study clearly shows that mounting a slotted baffle at the top wall instead of a solid baffle caused a decline in average Nusselt number. It is also found that for geometry with expansion ratio of 3 and a slotted baffle on the top of the channel, skin friction coefficient in both bottom wall and step wall has its minimal compared to other geometries.
KW - Backward facing step
KW - Channel with baffle
KW - Forced convection
KW - Laminar flow
UR - https://www.scopus.com/pages/publications/84884789172
U2 - 10.4028/www.scientific.net/AMM.388.169
DO - 10.4028/www.scientific.net/AMM.388.169
M3 - Conference contribution
AN - SCOPUS:84884789172
SN - 9783037858165
T3 - Applied Mechanics and Materials
SP - 169
EP - 175
BT - Advances in Thermofluids
T2 - 5th International Meeting on Advances of Thermofluids, IMAT 2012
Y2 - 12 November 2012 through 13 November 2012
ER -