Heat transfer and mixing in flow through pinched pipe

Nilesh S. Hasabnis, Kartik A. Totlani, Vivek V. Ranade*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


There is an increasing trend of using tubular reactors either with passive or active augmentation methods for process intensification. A new passive method with 'pinching of pipe' is proposed and investigated for its performance. In the present work, initially, flow in a pinched pipe was studied experimentally and the same was reproduced numerically. The computational model was then used to investigate influences of key geometrical parameters of pinched pipe configuration on pressure drop, heat transfer, and mixing. The simulated results obtained with the pinched pipe were compared with a straight pipe, and with a commonly-used passive augmentation method (twisted tape inserts). The pinched pipe configuration offers better performance and more flexibility in manipulating heat transfer and mixing in intensified devices.

Original languageEnglish
Pages (from-to)1860-1868
Number of pages9
JournalCanadian Journal of Chemical Engineering
Issue number10
Early online date14 Aug 2015
Publication statusPublished - Oct 2015
Externally publishedYes


  • Computational fluid dynamics (CFD)
  • Heat transfer
  • Mixing
  • Pinched pipe
  • Pressure drop

ASJC Scopus subject areas

  • Chemical Engineering(all)


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