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Modeling of Pressure Undershoot and Heat and Mass Transfer at Negative Pressures

[+] Author Affiliations
Janez Gale, Iztok Tiselj

Jožef Stefan Institute, Ljubljana, Slovenia

Paper No. FEDSM2005-77146, pp. 807-814; 8 pages
  • ASME 2005 Fluids Engineering Division Summer Meeting
  • Volume 1: Symposia, Parts A and B
  • Houston, Texas, USA, June 19–23, 2005
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-4198-7 | eISBN: 0-7918-3760-2
  • Copyright © 2005 by ASME


This paper addresses preliminary study of the behavior of the cold liquid exposed to the significant rapid pressure changes, performed with recently developed Waha computer code. The goal of the study is to develop semi-empirical model, able to describe heat and mass transfer in cold liquids exposed to negative pressure loads. Negative pressure in liquid can appear after sudden depressurization and the amount of pressure undershoot encountered is highly correlated to density of the nucleation sites i.e. properties defined at molecular level. Therefore, raw model is proposed and discussed and the conclusion is that the results are in particularly good agreement comparing to the uncertainty of the phenomenon itself.

Copyright © 2005 by ASME



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