Droplet Behavior Analyses in the BWR Dryer and Separator

Nakao, Toshitsugu; Saito, Yoshinori; Souma, Hisashi; Kawasaki, Terufumi; Aoyama, Goro

doi:10.1080/18811248.1998.9733858

Cited by 39 publications

(2 citation statements)

References 4 publications

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“…The gas velocity inside the corrugated plate fluctuated at a higher level with the aid of the drainage hooks, which enhanced the gas–liquid separation effect. According to the force analysis of the droplet motion in the corrugated plate by Nakao, as shown in Figure , the ratio of the inertial force and drag force F I / F D is used to describe the effect of velocity. F normalI F normalD = ρ normald D normald 2 u normald 2 18 μ normalg r normald false( u normalg − u normald false) 2 where r d is the radius of curvature of the droplet motion.…”

Section: Resultsmentioning

confidence: 99%

“…Chen et al , studied the effect of the drainage hook form in detail, and the results showed that the separation effect was better when the plate hook spacing was gradually decreased from the inlet to the outlet, and decreasing the plate spacing led to the deterioration of the separation effect at the same drain hook spacing. Nakao et al , developed a simplified blade based on the force analysis of droplets in the flow field and also on the experimental finding that droplets were separated mainly in the first and second stages of the corrugated plate. The experimental study can accurately respond to the effect of parameters on performance, but the long period, the small number of test points, and the limitations of the test conditions do not allow visual analysis of the flow field distribution and droplet trajectory within the corrugated plate.…”

Section: Introductionmentioning

confidence: 99%

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Simulation Study on the Corrugated Plate Gas–Liquid Separator with the Assistance of the Drainage Hook

Zhao

Cong

et al. 2022

ACS Omega

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Corrugated plate separators are widely used in the field of gas−liquid separation because of their excellent separation performance. The separation effect is very sensitive to the internal auxiliary structure of drainage hooks, so it is extremely important to study the action principle of drainage hooks to optimize the performance of corrugated plate separators. In this paper, Fluent is used as the solver and the realizable k−ε model is used to compare the separation performance of unhooked, single-hooked, and double-hooked corrugated plates. The results show that the separation efficiency of wave plates with hooks can reach 100%, the separation efficiency of wave plates without hooks is about 90%, and the superiority of the separation efficiency of single-hook and double-hook wave plates is related to the droplet partition diameter, which is positively correlated with Re. The pressure drop and separation efficiency increase with the increase of plate hook spacing, and the pressure drop and separation efficiency of single-hook and double-hook corrugated plates have different performance advantage zones influenced by Re and K a . When the Re is 9.64 × 10 3 and K a is 0.294, the separation effect of corrugated plates with the single hook and double hook is the same. Through the analysis of the gas-phase flow field and droplet motion trajectory, it is found that the drainage hook enhances the separation effect of the corrugated plate separator by increasing the local gas velocity and forming a vortex inside the drainage hook.

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