Inducing arbitrary vapor pressures, and quantifying leakages

Rafael Tadmor, Priyanka S. Wasnik, Hartmann E. N'guessan, Rafael Tadmor, Maria Tadmor

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We generalize the Maxwell drop evaporation equation to cover the range from closed system to open system through semiclosed system where the evaporation is restricted to an arbitrary degree which we show how to characterize. We first consider a suspended drop, and then a drop contacting a surface where the surface's vicinity restricts the evaporation paths. We show how to use these results to obtain arbitrary values of vapor pressure by simple manipulations of the numbers and sizes of droplets added to the system for a constant leak size, or, alternatively, control the leak size with a valve for given sizes of drops. We further show how to use this result to quantify a leakage in a system. Such a leakage is characterized using a single parameter (leakage length) which the described method calibrates. The calibrated leakage length can be used for systematic control of vapor concentrations within the chamber.

Original languageEnglish
Pages (from-to)4548-4553
Number of pages6
JournalAICHE Journal
Issue number12
StatePublished - 1 Dec 2016
Externally publishedYes


  • drops on surfaces
  • evaporation rate
  • leakage length
  • relative humidity
  • vapor pressure

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering (all)


Dive into the research topics of 'Inducing arbitrary vapor pressures, and quantifying leakages'. Together they form a unique fingerprint.

Cite this