Two-phase pressure drop and phase distribution at reduced tee junctions

Walters, Lori; Soliman, H.M.; Sims, G.E.

doi:10.1016/s0301-9322(98)00002-0

Cited by 41 publications

(20 citation statements)

References 13 publications

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“…Another thing noticed in 0.167 diameter ratio T-junction is that the liquid carryover in this T-junction is quite colossal as compared to large diameter ratio T-junctions. This can be justified by the concept that in very small diameter T- junctions such as 0.206, the two-phase separation become very sensitive to extraction rates [20,21]. Hence, at higher extraction rates, greater proportions of liquid phase ends up into the side arm.…”

Section: Resultsmentioning

confidence: 99%

Numerical simulation of two–phase separation in a small diameter ratio T‐junction

Pao

Saieed

Hashim

et al. 2017

Materialwissenschaft Werkst

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The utilization of T‐junctions for flow division is quite common in industries. Due to the phenomena known as multiphase maldistribution, occurring in a T‐junction, they are often used as partial phase separators for reducing the work load on phase separation devices in oil and gas platforms. Previous literature says that reducing the diameter ratio of the T‐junction improves the two‐phase separation, however it was also reported that reducing the diameter ratio too much has a negative effect on two‐phase separation. To test this, a numerical study was performed to see the two‐phase stratified flow separation in 1, 0.6 and 0.167 diameter ratio T‐junctions. Furthermore, the impact of air superficial velocity on phase maldistribution at the junction is also considered. The T‐junctions with diameter ratios 1 and 0.6 were just used for the validation of present model, by comparing the obtained numerical results with previous experimental data. While, 0.167 diameter ratio T‐junction is the one for which the actual analysis was performed. It is concluded that an increase in air superficial velocity aids liquid carryover, whereas liquid carryover is very sensitive to side arm extraction rates in a very small diameter ratio T‐junction.

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Section: Resultsmentioning

confidence: 99%

Numerical simulation of two–phase separation in a small diameter ratio T‐junction

Pao

Saieed

Hashim

et al. 2017

Materialwissenschaft Werkst

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“…Results by Buell et al [17], Walters et al [18], Azzopardi [19], and Wren et al [20] showed that the mass flow rate ratio of gas (F G ) at the fixed mass flow rate ratio of liquid (F L ) was increased for the reduced T-junction (D 3 /D 1 < 1). Thus, the modified model for the reduced Tjunction is suggested in Eq.…”

Section: Resultsmentioning

confidence: 99%

Two-phase split of refrigerants at a T-junction

Tae

Cho

2006

International Journal of Refrigeration

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“…This work Dow [1] Distributor; d B /d D ¼ 0.25; 0.5; 1 0-1 This work Idel'cik or Idelchik [63,64] Distributor; Collector Author Saba and Lahey [65] Distributor >0.3 Authors Hager [66] quoted by Bi Distributor; d B /d D small Author Seeger et al [67a,b] Distributor; d B /d D ¼ l This work Ballyk et al [68] Distributor; d B /d D ¼ l 0.1-1 Authors Hwang and Lahey [69] Distributor; d B /d D ¼ l, d % 4 cm 0.02-0.95 Authors Schmidt and Loth [70] Collector; d B /d C ¼ l Authors and this work Serre [71] ; Quoted by Bi [72] Collector; 0.055 < d B /d C < 0.117 Authors Buell et al [73] Distributor; d B /d D ¼ l Authors Walters et al [74] Distributor; d B /d D ¼ 0.0424; 0.25; 1 Authors Oka and Ito [51] Distributor; Collector; d B /d D,C ¼ 0.0874 accounts for angle Authors and this work…”

Section: Referencementioning

confidence: 99%

The theory of parallel channels manifolds (Ladder networks) revisited part 1: Discrete mesoscopic modelling

Midoux

Tondeur

2014

Can J Chem Eng

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This article proposes a theoretical overview of the distribution of fluid flow through manifolds composed of parallel channels connected through T‐junctions to a distributor and to a collector channel, thus composing a ladder‐like network. Such networks are used in solar heaters, fuel cells, heat exchanger plates, and other engineering devices, one issue being to achieve a nearly uniform distribution. This first part focuses on the discrete mesoscopic momentum and energy balances governing the T‐junctions, with particular attention to the empirical, flow‐rate and geometry dependent, pressure change coefficients. By “mesoscopic”, it is meant that the control volume for the balance equations includes the junction zone and that the local flow‐field in that zone is not described. The existing results and correlations for these coefficients are reviewed, compared, and synthesized. In keeping with the discrete character of the channel network, the overall network relations are compacted as a single non‐linear finite‐difference equation relating the flow‐rates in the different segments of the distributor. This formulation is suitable for convenient numerical resolution even when all the coefficients are allowed to vary with local conditions. The conditions for simplifications, such as assuming constancy of certain coefficients, are carefully investigated. A number of approximate analytical, semi‐explicit or explicit solutions are constructed. In particular, an original view of the structure of these solutions is proposed, relying on an invariance property which is demonstrated, and on the analogy with the classical McCabe‐Thiele construction in chemical engineering. These approximations are compared to exact numerical solutions.

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Two-phase pressure drop and phase distribution at reduced tee junctions

Cited by 41 publications

References 13 publications

Numerical simulation of two–phase separation in a small diameter ratio T‐junction

Numerical simulation of two–phase separation in a small diameter ratio T‐junction

Two-phase split of refrigerants at a T-junction

The theory of parallel channels manifolds (Ladder networks) revisited part 1: Discrete mesoscopic modelling

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