TY - JOUR
ID - 70883
TI - Stability analysis of stratified two-phase liquid-gas flow in a horizontal pipe
JO - Journal of Computational Applied Mechanics
JA - JCAMECH
LA - en
SN - 2423-6713
AU - Alipour, Farokh
AU - Noghrehabadi, Aminreza
AU - Danehdezfuli, Alireza
AD - Department of Mechanical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Y1 - 2019
PY - 2019
VL - 50
IS - 2
SP - 256
EP - 262
KW - Two phase flow
KW - stratified
KW - Instability equations
KW - Eigenvalue equations
KW - Chebyshev polynomial
DO - 10.22059/jcamech.2018.263984.310
N2 - This study aimed at linear stability analysis of the stratified two-phase liquid-gas flow in a horizontal pipe. First, equations governing the linear stability of flow in each phase and boundary conditions were obtained. The governing equations were eigenvalue Orr Sommerfeld equations which are difficult and stiff problems to solve. After obtaining the velocity profiles of the gas and liquid phases in the pipe, the instability equations for each phase with related boundary conditions were coupled and simultaneously solved by using the Chebyshev Tau - QZ polynomial method. The instability spectra for some points has been plotted and some curves about instability conditions the same as neutral stability curve which shown stable and unstable region respect to Reynolds number had been drown. According to the neutral stability curve for each phase, the liquid phase is more exposed to instability than the gas phase. The liquid phase was unstable in low Reynolds numbers and a large amplitude of the wave velocity α but gas was unstable in higher Reynolds number and small amplitude of α.
UR - https://jcamech.ut.ac.ir/article_70883.html
L1 - https://jcamech.ut.ac.ir/article_70883_91ba946bf109262bc9d8da59aafcc598.pdf
ER -