@Article{hmt.11.10,
AUTHOR = {Amnart Boonloi, Withada Jedsadaratanachai},
TITLE = {NUMERICAL PREDICTIONS ON FLOW AND HEAT TRANSFER IN  HEAT EXCHANGER TUBE EQUIPPED WITH VARIOUS FLOW  ATTACK ANGLES OF INCLINED-WAVY SURFACE},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {11},
YEAR = {2018},
NUMBER = {1},
PAGES = {1--14},
URL = {http://www.techscience.com/fhmt/v11n1/53403},
ISSN = {2151-8629},
ABSTRACT = {Numerical analysis on flow configuration, heat transfer behavior and thermal performance in the heat exchanger tube equipped with various flow 
attack angles of the inclined wavy surface are presented. The laminar flow (Re = 100 – 1200) and turbulent flow (Re = 3000 – 10000) are considered 
for the present investigation. The flow attack angles of the inclined wavy surface are varied as 15o
– 60o
. The finite volume method with SIMPLE 
algorithm is selected to evaluate the current problem. The numerical results are reported in terms of flow and heat transfer mechanisms. The 
performance evaluations in forms of the Nusselt number ratio (Nu/Nu<sub>0</sub>
), friction factor ratio (f/f<sub>0</sub>
) and thermal enhancement factor (TEF) are also 
concluded. As the results, the vortex flow, impinging flow and thermal boundary layer disturbance are detected when inserted the inclined wavy 
surface in the heat exchanger tube. These behaviors effect for the augmentation of the heat transfer rate, pressure loss and thermal performance. The 
optimum flow attack angle of the inclined wavy surface for the laminar and turbulent flows are also concluded.},
DOI = {10.5098/hmt.11.10}
}