THE INFLUENCE OF REYNOLDS-NUMBER ON THE ENTRY LENGTH AND PRESSURE-DROP FOR LAMINAR PIPE-FLOW

Authors
DOMBROWSKI N FOUMENY EA OOKAWARA S RIZA A
Citation
N. Dombrowski et al., THE INFLUENCE OF REYNOLDS-NUMBER ON THE ENTRY LENGTH AND PRESSURE-DROP FOR LAMINAR PIPE-FLOW, Canadian journal of chemical engineering, 71(3), 1993, pp. 472-476
Citations number
17
Categorie Soggetti
Engineering, Chemical
Journal title
Canadian journal of chemical engineering → ACNP
ISSN journal
00084034
Volume
71
Issue
3
Year of publication
1993
Pages
472 - 476
Database
ISI
SICI code
0008-4034(1993)71:3<472:TIOROT>2.0.ZU;2-Q
Abstract
A numerical analysis of the laminar flow of a Newtonian fluid in the i nlet section of a circular pipe has been carried out for a Reynolds nu mber range of 0 to 500, employing a finite element based CFD code. A n ew flow phenomenon has been identified at low Reynolds numbers (< 50), viz, the existence of a peak in the axial pressure profile at a small distance from the entrance. Existing correlations for the entry lengt h are shown to be insufficient and a new correlation for the entry len gth is proposed.