Abstract
The onset of the primary instability of two-phase stratified flow in a square duct was studied experimentally. Measurements were carried out by a specially designed fully non-intrusive technique. Critical values of the two superficial velocities corresponding to the primary instability of air-water stratified flows in a square duct were measured and successfully compared with the computationally predicted stability diagram. Along with the good quantitative agreement between the experimentally measured and numerically predicted critical superficial velocities, a qualitative agreement was obtained between predicted and measured frequencies of the critical perturbations.
Original language | English |
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Article number | 104061 |
Journal | International Journal of Multiphase Flow |
Volume | 153 |
DOIs | |
State | Published - Aug 2022 |
Keywords
- Interfacial waves
- Non-intrusive measurement
- Stability
- Stability map
- Two-phase flow