2-PHASE FLOW INSTABILITIES IN A HORIZONTAL SINGLE BOILING CHANNEL


YUNCU H. , YILDIRIM O., KAKAC S.

APPLIED SCIENTIFIC RESEARCH, vol.48, no.1, pp.83-104, 1991 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 1
  • Publication Date: 1991
  • Doi Number: 10.1007/bf01998667
  • Title of Journal : APPLIED SCIENTIFIC RESEARCH
  • Page Numbers: pp.83-104

Abstract

A study of the stability of an electrically heated single channel, forced convection horizontal system was conducted by using Freon-11 as the test fluid. Two major modes of oscillations, namely, density-wave type (high frequency) and pressure-drop type (low frequency) oscillations have been observed. The steady-state operating characteristics and stable and unstable regions are determined as a function of heat flux, exit orifice diameter and mass flow rate. Different modes of oscillations and their characteristics have been investigated. The effect of the exit restriction on the system stability has also been studied.