TY - JOUR
TI - Investigating the impacts of included angles on flow and heat transfer in cross-corrugated triangular ducts with field synergy principle
AU - Chen Zuoyi
AU - Zhang Lizhi
AU - Song Han
JN - Thermal Science
PY - 2013
VL - 17
IS - 3
SP - 823
EP - 832
PT - Article
AB - Included angles (α) have vital effect on the flow and heat transfer in  cross-corrugated triangular ducts. The friction factor and Nusselt number  were estimated at different Reynolds numbers from both experiments and  simulations. Results show that the flow in the duck with α=90 has the largest  friction factor and Nusselt number. However, the included angle influences  the flow and heat transfer in cross-corrugated triangular ducts in different  ways. The field synergy principle was used to explore the mechanism of the  different impacts of the included angle. Results show that the flow in the  cross-corrugated triangular duct with α=90o has the smallest domain averaged  included angle (βm), which implies the best synergy performance. The results  of the field synergy principle were also validated by analyzing the  performance evaluation criterion and studying the velocity vector and  temperature distributions.