Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV

Wael Fairouz Saleh, Robert C. Bowden, Ibrahim Hassan, Lyes Kadem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The discharge of two-phase flow from a stratified region through single or multiple branches is an important process in many industrial applications including the pumping of fluid from storage tanks, shell-and-tube heat exchangers, and the fluid flow through header to the cooling channels, feeder's tube, of nuclear reactors during loss-of-coolant accidents (LOCA). Knowledge of the flow phenomena involved along with the quality and mass flow rate of the discharging stream(s) is necessary to adequately predict the different phenomena associated with the process. Stereoscopic Particle Image Velocimetry (3D-PIV) was used to provide detailed measurements of the flow patterns involving distributions of mean velocity, vorticity field, and flow structure. The experimental investigation was carried out to simulate two phase discharge from a stratified region through branches located on a quarter-circular wall configuration exposed to a stratified gas-liquid environment. The quarter-circular test section is in close dimensional resemblance with that of a CANDU header-feeder system, with branches mounted at orientation angles of zero, 45° and 90° degrees from the horizontal. The experimental data for the phase development (mean velocity, flow structure, etc..) was done during dual discharge through the horizontal branch and the 45° or 90° branch from an air/water stratified region over a two selected Froude numbers in the horizontal branch while maintaining the Froude number in the other branch constant. These measurements were used to describe the effect of outlet flow conditions on phase redistribution in headers and understand the entrainment phenomena.

Original languageEnglish
Title of host publicationProceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
Pages871-879
Number of pages9
Volume1
EditionPART B
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States
Duration: 2 Aug 20096 Aug 2009

Other

Other2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009
CountryUnited States
CityVail, CO
Period2/8/096/8/09

Fingerprint

Air entrainment
Froude number
Flow structure
Gases
Loss of coolant accidents
Tubes (components)
Vorticity
Two phase flow
Velocity measurement
Flow patterns
Industrial applications
Flow of fluids
Flow rate
Cooling
Fluids
Water
Liquids
Air

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Saleh, W. F., Bowden, R. C., Hassan, I., & Kadem, L. (2009). Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009 (PART B ed., Vol. 1, pp. 871-879) https://doi.org/10.1115/FEDSM2009-78334

Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV. / Saleh, Wael Fairouz; Bowden, Robert C.; Hassan, Ibrahim; Kadem, Lyes.

Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. Vol. 1 PART B. ed. 2009. p. 871-879.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Saleh, WF, Bowden, RC, Hassan, I & Kadem, L 2009, Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV. in Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. PART B edn, vol. 1, pp. 871-879, 2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009, Vail, CO, United States, 2/8/09. https://doi.org/10.1115/FEDSM2009-78334
Saleh WF, Bowden RC, Hassan I, Kadem L. Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV. In Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. PART B ed. Vol. 1. 2009. p. 871-879 https://doi.org/10.1115/FEDSM2009-78334
Saleh, Wael Fairouz ; Bowden, Robert C. ; Hassan, Ibrahim ; Kadem, Lyes. / Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV. Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009. Vol. 1 PART B. ed. 2009. pp. 871-879
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