Research Article

Experiments in Fluids

, Volume 44, Issue 1, pp 125-136

Characteristics of liquid sheets formed by splash plate nozzles

  • M. AhmedAffiliated withDepartment of Mechanical and Industrial Engineering, University of TorontoMechanical Engineering Department, Assiut University
  • , A. AmighiAffiliated withDepartment of Mechanical and Industrial Engineering, University of Toronto
  • , N. AshgrizAffiliated withDepartment of Mechanical and Industrial Engineering, University of Toronto Email author 
  • , H. N. TranAffiliated withDepartment of Chemical Engineering & Applied Chemistry, University of Toronto

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

An experimental study was conducted to identify the effect of viscosity on the characteristics of liquid sheets formed by a splash plate nozzle. Various mixtures of corn syrup and water are used to obtain viscosities in the range 1–170 mPa.s. Four different splash plates with nozzle diameters of 0.5, 0.75, 1, and 2 mm, with a constant plate angle of 55° were tested. Liquid sheets formed under various operating conditions were directly visualized. The sheet atomization process for the range of parameters studied here is governed by two different mechanisms: Rayleigh–Plateau (R–P) and Rayleigh–Taylor (R–T) instabilities. R–P occurs at the rim and R–T occurs on the thin sheet. The rim instability can be laminar or turbulent, depending on the jet Reynolds number. The R–T instability of the sheet is observed at the outer edges of the radially spreading sheet, where the sheet is the thinnest. It can also occur inside the sheet, due to formation of holes and ruptures.