Experimental and numerical study of Upper Swirling Liquid Film (USLF) among Gas-Liquid Cylindrical Cyclones (GLCC)

Yue, Ti; Chen, Jianyi; Song, Jianfei; Chen, Xiaohui; Wang, Yaan; Jia, Zhiliang; Rumin, Xu

doi:10.1016/j.cej.2018.10.018

Cited by 67 publications

(21 citation statements)

References 26 publications

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“…Perkembangan teknologi komputasi mendorong kemajuan pengembangan riset separator GLCC, diantaranya Guiterrez et al [11] untuk mensimulasikan aliran 3D dalam GLCC dan fenomena vortex, Hreiz et al [12] memvisualisasikan aliran single-phase swirl di dalam GLCC, Le [13] memodelkan pola aliran pada inlet tangensial dan di dalam siklon GLCC, dan Ghasemi et al [14] tentang optimisasi kondisi pengoperasian GLCC dengan mereduksi terjadinya GCU dan LCU. Penelitian terkini oleh Yue et al [15] telah menginvestigasi rezim dan perilaku aliran pada fenomena upper swirling liquid film (USLF). Empat rezim aliran berhasil divisualisasi yaitu aliran swirl, churn, annular, dan ribbon.…”

Section: |Rotasiunclassified

Unjuk Kerja Separator Gas Liquid Cylindical Cyclone (GLCC Metering Loop)

Effendy

2019

Rot.

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Separator siklon silinder vertikal (Gas Liquid Cylindrical Cyclones) merupakan alat pemisahan aliran multifase yang umum dipergunakan dalam industri perminyakan. Penelitian ini bertujuan untuk mengevaluasi unjuk kerja dan perilaku hidrodinamika fluida separator GLCC metering loop pada pemisahan aliran campuran udara dan air. Eksperimen dilakukan dengan membuat separator skala uji laboratorium menggunakan pipa acrylic plexyglass diameter 6,25 cm, tinggi 140 cm dengan sistem inlet tangensial pada sudut inklinasi 30o, serta dilengkapi 5 variasi posisi saluran keluaran. Percobaan dilakukan dengan memvariasikan debit udara dan efek posisi saluran keluaran (recombination point). Beberapa aspek penting seperti kecepatan superficial gas (Vsg), kecepatan superficial cairan (Vsl), level cairan kesetimbangan (Leq), liquid carry over (LCO) dan gas carry under (GCU) menjadi perhatian selama percobaan. Hasil penelitian menunjukkan bahwa empat regim aliran yaitu aliran gelembung (bubble flow), aliran gelembung paket (packed bubble flow), aliran kantung gas atau sumbat cair (slug flow) dan aliran acak (churn flow) dipengaruhi oleh konfigurasi rasio aliran gas-cairan dan posisi rekombinasinya. Rasio kecepatan superfisial antara udara dan cairan memainkan peran penting terhadap terbentuknya regim aliran dan ketinggian level cairan kesetimbangan.

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Section: |Rotasiunclassified

Unjuk Kerja Separator Gas Liquid Cylindical Cyclone (GLCC Metering Loop)

Effendy

2019

Rot.

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“…on USLF Height There is evidence in the literature that inlet nozzle size and shape have an effect on the performance of gas-liquid cyclonic separator concerning liquid carry over [6][7][8][9]. Though, Hreiz observed that too severe converging inlet nozzle destabilised USLF, but there were no sufficient data to back-up this claim [3].…”

Section: Effect Of Inlet Pipe Orientation and Nozzle Geometrymentioning

confidence: 99%

“…During the adverse operating condition, the height attained by the USLF could be as high as the separator gas outlet. Yue et al, recently studied the flow regimes associated with the USLF experimentally and numerically, but there was no data on the height of the USLF [6]. Researchers have made efforts to design film removal devices to extract the liquid film from the separator wall to increase the operating envelope of the separator to minimise the effect of the USLF on liquid carryover.…”

Section: Introductionmentioning

confidence: 99%

On Upward Swirling Liquid Film in Gas-liquid Pipe Compact Separator

Kanshio¹

2019

PSE

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This paper presents experimental findings on upward swirling liquid film for both single-phase and two-phase gas-liquid flow in a vertical gas-liquid cyclonic separator. The upward swirling liquid film is one dynamic phenomenon that occurs in pipe cyclonic separator. The upward swirling of the liquid film in the upper part of the cyclonic separator is the primary source of liquid entrainment into the gas core. Liquid entrainment from the separator wall into the gas core is the main cause of liquid carryover. Liquid carryover is the major disadvantage of the gas-liquid pipe cyclonic separator. Various researchers in the past have identified the effect of this phenomenon on the performance of gas-liquid pipe cyclonic separator, but not many efforts have been made to study the phenomenon in detail. In this work, the upward swirling liquid film height was measured using a meter rule, while the thickness of the swirling liquid film was estimated using the void fraction that was measured with electrical resistance tomography (ERT). The experimental results show that the height attained by the upward swirling liquid film is a function of the film thickness and inlet gas velocity. The results also showed that the horizontal inlet pipe produces the highest liquid film height when compared with the inclined inlet pipe. By keeping the liquid flow rate constant and increasing gas flow rate, a maximum liquid film height was observed, afterwards, the liquid film height decreases within increasing gas flow rate.

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“…Based on the numerical simulation and the experimental results, they International Journal of Aerospace Engineering established a numerical model for the impact of the collision and breakup of the droplets to the separation efficiency on the wall. Yue et al [31] used experiments and numerical simulations to explain the flow state and flow behavior of the upper spinning liquid film (USLF) in the gas-liquid cylindrical cyclone. Based on the experiments, the four flow patterns were determined, which were swirling flow, stirring flow, annular flow, and ribbon flow, and their flow pattern diagrams were also established.…”

Section: Introductionmentioning

confidence: 99%

Performance Prediction Model of Dynamic Pressure Oil-Air Separator

Zhang

Lang

Zhang

et al. 2021

International Journal of Aerospace Engineering

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Based on the aeroengine lubricating oil system test bench, this paper used a dimensional analysis method to establish a mathematical model for predicting the separation efficiency and resistance of a dynamic pressure oil-air separator suitable for engineering. The analysis of the multivariate nonlinear fitting error and the experimental data showed that the established separation efficiency and resistance model could accurately predict the separation and resistance performance of the dynamic pressure oil-air separator within a certain range; the average error of the four separation characteristic prediction models was 3.5%, and the maximum error was less than 16%. The model that was established by the least square method had the highest accuracy; the average error of the multivariate nonlinear fitting of the four resistance characteristic prediction models was less than 4%, and the maximum error was less than 15%, which could be used to predict the resistance performance of the separator. The applicable working condition of the model is lubricating oil flow rate 4.3~8.5 L/min and oil-air ratio 0.5~3.

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Experimental and numerical study of Upper Swirling Liquid Film (USLF) among Gas-Liquid Cylindrical Cyclones (GLCC)

Cited by 67 publications

References 26 publications

Unjuk Kerja Separator Gas Liquid Cylindical Cyclone (GLCC Metering Loop)

Unjuk Kerja Separator Gas Liquid Cylindical Cyclone (GLCC Metering Loop)

On Upward Swirling Liquid Film in Gas-liquid Pipe Compact Separator

Performance Prediction Model of Dynamic Pressure Oil-Air Separator

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