Full Content is available to subscribers

Subscribe/Learn More  >

Droplet Nucleation and Growth in Cryogenic Turboexpanders

[+] Author Affiliations
Ashish Alex Sam, Keerthi Raj Kunniyoor, Jayachandran K. Narayanan, Arpit Mishra, Parthasarathi Ghosh

Indian Institute of Technology Kharagpur, Kharagpur, India

Paper No. IMECE2018-88343, pp. V007T09A068; 9 pages
  • ASME 2018 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Pittsburgh, Pennsylvania, USA, November 9–15, 2018
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5210-1
  • Copyright © 2018 by ASME


Cryogenic turboexpanders for nitrogen refrigeration and liquefaction cycles operating near liquefaction conditions are vulnerable to droplet formation. The turboexpander must be devoid of any traces of droplets, as this may cause damage to the blades and also result in performance deterioration. Hence, a multiphase flow analysis was conducted, based on the droplet condensation model in Ansys CFX®, to identify any possible droplet sites and its nature of propagation. A single-phase steady state simulation of the turboexpander was performed initially to identify the regions susceptible to droplet formation, followed by a multiphase analysis to study the flow field behavior and to characterize the droplet nucleation and growth. It has been observed that the low-pressure regions like vortices and wakes are susceptible to sub-cooling and thereby in droplet formation. Also, major geometrical parameters that affect the droplet nucleation have also been identified.

Copyright © 2018 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

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 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