An Experimental Investigation of Possible Methods to Reduce Laminar Entry Lengths

[+] Author and Article Information
A. F. Emery

University of Washington, Seattle, Wash.

C. S. Chen

Department of Mechanical Engineering, University of Michigan, Ann Arbor, Mich.

J. Basic Eng 90(1), 134-137 (Mar 01, 1968) (4 pages) doi:10.1115/1.3605053 History: Received November 10, 1967; Online November 03, 2011


The use of annuli, converging nozzles, and a converging-diverging wall section in round tubes to reduce the laminar entry lengths was studied. Over a very limited range of Reynolds numbers only the largest diameter annuli were partially effective—and then only by yielding a reduction of 20 percent.

Copyright © 1968 by ASME
Your Session has timed out. Please sign back in to continue.





Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In