Phase Splitting of Wet Steam in Annular Flow Through a Horizontal Branching Tee

1996 ◽  
Vol 11 (02) ◽  
pp. 83-88 ◽  
Author(s):  
Sze-Foo Chien
Keyword(s):  
Annular Flow ◽  
Wet Steam ◽  
Flow Through

Upward Vertical Two-Phase Flow Through an Annulus—Part II: Modeling Bubble, Slug, and Annular Flow

1992 ◽  
Vol 114 (1) ◽  
pp. 14-30 ◽  
Author(s):  
E. F. Caetano ◽  
O. Shoham ◽  
J. P. Brill
Keyword(s):  
Flow Pattern ◽  
Annular Flow ◽  
Two Phase Flow ◽  
Flow Behavior ◽  
Bubble Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Flow Through ◽  
Physical Phenomena ◽  
Good Agreement

Mechanistic models have been developed for each of the existing two-phase flow patterns in an annulus, namely bubble flow, dispersed bubble flow, slug flow, and annular flow. These models are based on two-phase flow physical phenomena and incorporate annulus characteristics such as casing and tubing diameters and degree of eccentricity. The models also apply the new predictive means for friction factor and Taylor bubble rise velocity presented in Part I. Given a set of flow conditions, the existing flow pattern in the system can be predicted. The developed models are applied next for predicting the flow behavior, including the average volumetric liquid holdup and the average total pressure gradient for the existing flow pattern. In general, good agreement was observed between the experimental data and model predictions.

scholarly journals The Effects of Oil Property and Inclination Angle on Oil–Water Core Annular Flow Through U-Bends

2017 ◽  
Vol 39 (6) ◽  
pp. 536-548
Author(s):  
Fan Jiang ◽  
Ke Wang ◽  
Martin Skote ◽  
Teck Neng Wong ◽  
Fei Duan
Keyword(s):  
Inclination Angle ◽  
Annular Flow ◽  
Flow Through ◽  
Oil Water

Modelling of annular flow through pipes and T-junctions

2004 ◽  
Vol 33 (2) ◽  
pp. 289-313 ◽  
Author(s):  
D. Adechy ◽  
R.I. Issa
Keyword(s):  
Annular Flow ◽  
Flow Through

scholarly journals Numerical Simulation of Non-Equilibrium Two-Phase Wet Steam Flow through an Asymmetric Nozzle

Fluids ◽  
2017 ◽  
Vol 2 (4) ◽  
pp. 63
Author(s):  
Miah Alam ◽  
Manabu Takao ◽  
Toshiaki Setoguchi
Keyword(s):  
Numerical Simulation ◽  
Steam Flow ◽  
Wet Steam ◽  
Two Phase ◽  
Flow Through ◽  
Wet Steam Flow ◽  
Non Equilibrium

CFD simulation of core annular flow through sudden contraction and expansion

2012 ◽  
Vol 86-87 ◽  
pp. 153-164 ◽  
Author(s):  
V.V.R. Kaushik ◽  
Sumana Ghosh ◽  
Gargi Das ◽  
Prasanta Kumar Das
Keyword(s):  
Annular Flow ◽  
Cfd Simulation ◽  
Sudden Contraction ◽  
Flow Through ◽  
Contraction And Expansion

Numerical Solution of Wet Steam Flow through Blade Cascade

2016 ◽  
Vol 821 ◽  
pp. 31-38
Author(s):  
Vladimír Hric ◽  
Jan Halama
Keyword(s):  
Equations Of State ◽  
Suction Side ◽  
Steam Flow ◽  
Droplet Growth ◽  
Wet Steam ◽  
Two Phase ◽  
Blade Cascade ◽  
Flow Through ◽  
Wet Steam Flow ◽  
Non Equilibrium

The paper concerns with the numerical modeling of wet steam flow through a blade cascade in transonic regime with non-equilibrium condensation in 2D. Real thermodynamics of vapor phase is implemented in the way which mostly avoid iterations in order to calculate thermodynamic properties. This equation of state is represented by the function for non-dimensional entropy with independent variables scaled density and scaled internal energy. Other equations of state are used for comparison, namely special gas equation which comes from IAPWS-95 formulation and simple pseudo perfect gas relation. We applied simple homogeneous non-equilibrium approach to model two-phase flow. Laminar compressible Navier-Stokes system of equations is used for the mixture properties. Liquid phase is described by the standard method of moments of droplet number distribution function. We consider obtained numerical results to be in good agreement with the measured data. We note the fact that robust and accurate closure of supplementary liquid system (nucleation rate and droplet growth model) is still not available and most often ad-hoc corrections are proposed by the authors. Results show differences among used equations of state as well. This is apparent mainly in the vicinity of condensation shock region on the suction side.

Sign in / Sign up

Export Citation Format

Share Document