Approximate Correction for Unsteady Pressure Differential in a Capillary-Tube Gas Viscosimeter

[+] Author and Article Information
K. R. van Doren, R. A. Guereca, H. P. Richardson, D. Cummins

Helium Research Center, Bureau of Mines, U. S. Department of Interior, Amarillo, Texas

J. Appl. Mech 36(2), 171-180 (Jun 01, 1969) (10 pages) doi:10.1115/1.3564604 History: Received October 16, 1968; Revised January 17, 1969; Online September 14, 2011


Equations are developed which satisfactorily describe the change in the pressure differential with time for a closed, constant-volume system which utilizes a coiled-capillary tube and a constant-rate pump to determine gas viscosities. Viscosities are computed at transient, unsteady, and apparent-steady-state conditions. As long as the flow rates are not too high and the pressure level is not too low, the computed viscosities appear to be reliable.

Copyright © 1969 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