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 language | English |
|---|---|
| Title of host publication | Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009 |
| Pages | 871-879 |
| Number of pages | 9 |
| Volume | 1 |
| Edition | PART B |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |
| Event | 2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 - Vail, CO, United States Duration: 2 Aug 2009 → 6 Aug 2009 |
Other
| Other | 2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009 |
|---|---|
| Country | United States |
| City | Vail, CO |
| Period | 2/8/09 → 6/8/09 |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Mechanical Engineering
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Investigation of the onset of gas entrainment in dual discharging oriented branches on a curved wall with stratified flow using stereo PIV
AU - Saleh, Wael Fairouz
AU - Bowden, Robert C.
AU - Hassan, Ibrahim
AU - Kadem, Lyes
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=77952950310&partnerID=8YFLogxK
U2 - 10.1115/FEDSM2009-78334
DO - 10.1115/FEDSM2009-78334
M3 - Conference contribution
SN - 9780791843727
VL - 1
SP - 871
EP - 879
BT - Proceedings of the ASME Fluids Engineering Division Summer Conference 2009, FEDSM2009
ER -