@article{article9,
  title = {Effect of viscosity on entropy generation for laminar flow in helical pipes},
  author = {PRATTIPATI, R. and NARLA, V.K. and PENDYALA, S.},
  journal = {Journal of Thermal Engineering},
  year = {2021},
  volume = {7},
  pages = {1100-1109},
  doi = {10.18186/thermal.977960}
}