A Regression Line for a Laser Doppler Anemometer

Refrigeration and air conditioning consume 15% of the total generated electricity. Vapor condensation devices need a heat sink which may come in the form of absorption cycles devices. Two fluids, which change phase and concentration, flow through these devices. These changes take place amid a two-phase flow in contact with a solid phase. Hence, an extended study of the velocity profiles across the thin liquid layer is necessary, which is assumed to be conducted by a laser Doppler anemometer. The preliminary studies concerning the calibration of this anemometer are reported.

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Pressure Drop for Oil-Gas Two-Phase Flow Through Straight Horizontal Pipe

10.2523/11069-ms ◽

2007 ◽

Author(s):

Wenhong Liu ◽

Liejin Guo ◽

Ximin Zhang ◽

Kai Lin ◽

Long Yang ◽

...

Keyword(s):

Pressure Drop ◽

Two Phase Flow ◽

Phase Flow ◽

Two Phase ◽

Horizontal Pipe ◽

Flow Through ◽

Oil Gas

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The influence of the Stokes and Archimedes forces on the stability of a two-phase flow

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2003.1.020 ◽

2003 ◽

Vol 3 ◽

pp. 266-270

Author(s):

B.H. Khudjuyerov ◽

I.A. Chuliev

Keyword(s):

Spectral Method ◽

Stability Region ◽

Gas Flow ◽

Two Phase Flow ◽

Solid Phase ◽

Stability Characteristic ◽

Phase Flow ◽

Two Phase ◽

The Stability

The problem of the stability of a two-phase flow is considered. The solution of the stability equations is performed by the spectral method using polynomials of Chebyshev. A decrease in the stability region gas flow with the addition of particles of the solid phase. The analysis influence on the stability characteristic of Stokes and Archimedes forces.

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

Journal of Energy Resources Technology ◽

10.1115/1.2905916 ◽

1992 ◽

Vol 114 (1) ◽

pp. 14-30 ◽

Cited By ~ 26

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.

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