Relation of turbulent mass transfer to a wall at high Schmidt numbers to the velocity field

Kamalesh K. Sirkar, Thomas J. Hanratty

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Turbulent mass transfer to a wall at high Schmidt numbers is controlled by the velocity field within the viscous sublayer. Measurements have been obtained of the root-mean-square fluctuating mass transfer coefficient and the frequency spectrum of the fluctuating mass transfer coefficient for a Schmidt number of about 2300. From an order-of-magnitude analysis it is concluded that flow fluctuations in the direction of mean flow have little effect on the mass transfer fluctuations. A comparison of the mass transfer spectrum with the spectrum of the component of the velocity gradient in the transverse direction sz reveals that the high-frequency portion of the sz spectrum is not effective in transferring mass. Approximate relations between the mass transfer spectrum and the sz spectrum are developed for high frequencies and for low frequencies.

Original languageEnglish (US)
Pages (from-to)589-603
Number of pages15
JournalJournal of Fluid Mechanics
Volume44
Issue number3
DOIs
StatePublished - Nov 26 1970
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Relation of turbulent mass transfer to a wall at high Schmidt numbers to the velocity field'. Together they form a unique fingerprint.

Cite this