Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow

Liang-Ming Pan; Lui He; Yao Vvu; Peng Ju; Takashi Hibiki; Mamoru Ishii

Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow

Liang-Ming Pan^*
, Lui He
, Yao Vvu
, Peng Ju
, Takashi Hibiki
, Mamoru Ishii

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

The knowledge of the interfacial shear stress is not only essential for estimating the pressure drop but also is fundamental for modelling two- phase flow phenomena. Most annular flow interfacial shear stress models in the open literature are formulated based upon the sand-roughness model, which diverge from reality to some extent because of the mobility of gas-liquid interface. In view of this, a prediction model of gas- liquid interfacial shear stress for vertical annular flow has been proposed, which takes the interfacial characteristics into account, i.e. the local disturbance wave shapes obtained through processing the time trace of liquid film thickness that is measured using high-speed videos and extracted by the Matlab code in our previous work. What is more, the influence of the entrainment-deposition process and formation of gas eddy caused by the distuibance wave height when the gas core moves through the disturbance wave and subsequently encounters an abrupt expansion on the interfacial shear stress are incorporated into the model. The results predicted by the current model show that the interfacial shear stress has an increasing trend for the increase of both gas and liquid superficial velocities, and the non-dimensional pressure drop originating from the interfacial shear stress is in the form of CFS = 33.6Re^°" Re"".

Original language	English
Title of host publication	International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015
Publisher	American Nuclear Society
Pages	4313-4322
Volume	5
ISBN (Print)	9781510811843
Publication status	Published - 2015
Externally published	Yes
Event	16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2015 - Chicago, United States Duration: 30 Aug 2015 → 4 Sept 2015 http://glc.ans.org/nureth-16/data/index.htm

Publication series

Name	International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015
Volume	5

Conference

Conference	16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2015
Place	United States
City	Chicago
Period	30/08/15 → 4/09/15
Internet address	http://glc.ans.org/nureth-16/data/index.htm

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Annular flow. interfacial shear stress
Disturbance wave height
Pressure drop

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Pan, L.-M., He, L., Vvu, Y., Ju, P., Hibiki, T., & Ishii, M. (2015). Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow. In International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015 (Vol. 5, pp. 4313-4322). (International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015; Vol. 5). American Nuclear Society.

Pan, Liang-Ming ; He, Lui ; Vvu, Yao et al. / Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow. International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015. Vol. 5 American Nuclear Society, 2015. pp. 4313-4322 (International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015).

@inproceedings{d26c332176a5466799097081155f16d3,

title = "Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow",

abstract = "The knowledge of the interfacial shear stress is not only essential for estimating the pressure drop but also is fundamental for modelling two- phase flow phenomena. Most annular flow interfacial shear stress models in the open literature are formulated based upon the sand-roughness model, which diverge from reality to some extent because of the mobility of gas-liquid interface. In view of this, a prediction model of gas- liquid interfacial shear stress for vertical annular flow has been proposed, which takes the interfacial characteristics into account, i.e. the local disturbance wave shapes obtained through processing the time trace of liquid film thickness that is measured using high-speed videos and extracted by the Matlab code in our previous work. What is more, the influence of the entrainment-deposition process and formation of gas eddy caused by the distuibance wave height when the gas core moves through the disturbance wave and subsequently encounters an abrupt expansion on the interfacial shear stress are incorporated into the model. The results predicted by the current model show that the interfacial shear stress has an increasing trend for the increase of both gas and liquid superficial velocities, and the non-dimensional pressure drop originating from the interfacial shear stress is in the form of CFS = 33.6Re\textasciicircum{}°{"} Re{"}{"}.",

keywords = "Annular flow. interfacial shear stress, Disturbance wave height, Pressure drop",

author = "Liang-Ming Pan and Lui He and Yao Vvu and Peng Ju and Takashi Hibiki and Mamoru Ishii",

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series = "International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015",

publisher = "American Nuclear Society",

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Pan, L-M, He, L, Vvu, Y, Ju, P, Hibiki, T & Ishii, M 2015, Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow. in International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015. vol. 5, International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015, vol. 5, American Nuclear Society, pp. 4313-4322, 16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2015, Chicago, United States, 30/08/15.

Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow. / Pan, Liang-Ming; He, Lui; Vvu, Yao et al.
International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015. Vol. 5 American Nuclear Society, 2015. p. 4313-4322 (International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015; Vol. 5).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow

AU - Pan, Liang-Ming

AU - He, Lui

AU - Vvu, Yao

AU - Ju, Peng

AU - Hibiki, Takashi

AU - Ishii, Mamoru

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2015

Y1 - 2015

N2 - The knowledge of the interfacial shear stress is not only essential for estimating the pressure drop but also is fundamental for modelling two- phase flow phenomena. Most annular flow interfacial shear stress models in the open literature are formulated based upon the sand-roughness model, which diverge from reality to some extent because of the mobility of gas-liquid interface. In view of this, a prediction model of gas- liquid interfacial shear stress for vertical annular flow has been proposed, which takes the interfacial characteristics into account, i.e. the local disturbance wave shapes obtained through processing the time trace of liquid film thickness that is measured using high-speed videos and extracted by the Matlab code in our previous work. What is more, the influence of the entrainment-deposition process and formation of gas eddy caused by the distuibance wave height when the gas core moves through the disturbance wave and subsequently encounters an abrupt expansion on the interfacial shear stress are incorporated into the model. The results predicted by the current model show that the interfacial shear stress has an increasing trend for the increase of both gas and liquid superficial velocities, and the non-dimensional pressure drop originating from the interfacial shear stress is in the form of CFS = 33.6Re^°" Re"".

AB - The knowledge of the interfacial shear stress is not only essential for estimating the pressure drop but also is fundamental for modelling two- phase flow phenomena. Most annular flow interfacial shear stress models in the open literature are formulated based upon the sand-roughness model, which diverge from reality to some extent because of the mobility of gas-liquid interface. In view of this, a prediction model of gas- liquid interfacial shear stress for vertical annular flow has been proposed, which takes the interfacial characteristics into account, i.e. the local disturbance wave shapes obtained through processing the time trace of liquid film thickness that is measured using high-speed videos and extracted by the Matlab code in our previous work. What is more, the influence of the entrainment-deposition process and formation of gas eddy caused by the distuibance wave height when the gas core moves through the disturbance wave and subsequently encounters an abrupt expansion on the interfacial shear stress are incorporated into the model. The results predicted by the current model show that the interfacial shear stress has an increasing trend for the increase of both gas and liquid superficial velocities, and the non-dimensional pressure drop originating from the interfacial shear stress is in the form of CFS = 33.6Re^°" Re"".

KW - Annular flow. interfacial shear stress

KW - Disturbance wave height

KW - Pressure drop

UR - https://www.scopus.com/pages/publications/84962760128

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84962760128&origin=recordpage

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781510811843

VL - 5

T3 - International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015

SP - 4313

EP - 4322

BT - International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015

PB - American Nuclear Society

T2 - 16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2015

Y2 - 30 August 2015 through 4 September 2015

ER -

Pan LM, He L, Vvu Y, Ju P, Hibiki T, Ishii M. Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow. In International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015. Vol. 5. American Nuclear Society. 2015. p. 4313-4322. (International Topical Meeting on Nuclear Reactor Thermal Hydraulics 2015, NURETH 2015).

Experimental study of pressure drop and modeling of interfacial shear for vertical annular flow

Abstract

Publication series

Conference

Bibliographical note

Research Keywords

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