Prediction of pressure drop for turbulent fluid flow in 90° bends

N. M. Crawford*, G. Cunningham, P. L. Spedding

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
301 Downloads (Pure)


The pressure drop for turbulent single-phase fluid flow around sharp 90° pipe bends has proven to be difficult to predict owing to the complexity of the flow arising from frictional and separation effects. Existing models accurately predict the frictional effects, but no precise models are available to predict the flow due to separation. It is the purpose of this work to propose a model capable of such prediction. The proposed model is presented and added to an existing model to predict pressure losses over the turbulent Reynolds number range up to 3 × 105. The predicted data is within a spread of +3 to -2 per cent of existing experimental data. Future work will validate this model experimentally and computationally.

Original languageEnglish
Pages (from-to)153-156
Number of pages4
JournalProceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
Issue number3
Publication statusPublished - 22 Oct 2003


  • 90° bend
  • Friction factor
  • Pressure loss

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


Dive into the research topics of 'Prediction of pressure drop for turbulent fluid flow in 90° bends'. Together they form a unique fingerprint.

Cite this