TY - JOUR
TI - Computational fluid dynamics analysis on heat transfer and friction factor characteristics of a turbulent flow for internally grooved tubes
AU - Selvaraj Ponnusamy
AU - Sarangan Jagannathan
AU - Suresh Sivan
JN - Thermal Science
PY - 2013
VL - 17
IS - 4
SP - 1125
EP - 1137
PT - Article
AB - The article presents computational fluid dynamics studies on heat transfer,  pressure drop, friction factor, Nusselt number and thermal hydraulic  performance of a plain tube and tube equipped with the three types of  internal grooves (circular, square and trapezoidal).Water was used as the  working fluid. Tests were performed for Reynolds number ranges from 5000 to  13500 for plain tube and different geometry inside grooved tubes. The maximum  increase of pressure drop was obtained from numerical modeling 74% for  circular, 38% for square and 78% for trapezoidal grooved tubes were compared  with plain tube. Based on computational fluid dynamics analysis the average  Nusselt number was increased up to 37%, 26% and 42% for circular, square and  trapezoidal grooved tubes respectively while compared with the plain tube.  The thermal hydraulic performance was obtained from computational fluid  dynamics analysis up to 38% for circular grooved tube, 27% for square grooved  tube and 40% for trapezoidal grooved tube while compared with the plain tube.