Relevant bibliographies by topics / Drift flow model

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Drift flow model'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Drift flow model"

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Pokhrel, Puskar R., Parameshwari Kattel, Khim B. Khattri, and Jeevan Kafle. "Rheological Parameter Analysis in Generalized Bulk Mixture Mass Flow Model." Nepali Mathematical Sciences Report 37, no. 1-2 (2020): 71–79. http://dx.doi.org/10.3126/nmsr.v37i1-2.34093.

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Pokhrel et al. recently developed a generalized quasi two-phase bulk mixture model for mass flow. This model has been constructed by employing full dimensional two-phase mass flow model equations. The model is a set of coupled partial differential equations which is characterized by some new mechanical and dynamical aspects of generalized bulk and shear viscosities, pressure, velocities and effective friction for the mixture where all these are evolving as functions of several dynamical variables, physical parameters, inertial and dynamical coefficients and drift factors. They formulated press
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Pokhrel, Puskar R., Parameshwari Kattel, Khim B. Khattri, and Jeevan Kafle. "Rheological Parameter Analysis in Generalized Bulk Mixture Mass Flow Model." Nepali Mathematical Sciences Report 37, no. 1-2 (2020): 71–79. http://dx.doi.org/10.3126/nmsr.v37i1-2.34093.

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Pokhrel et al. recently developed a generalized quasi two-phase bulk mixture model for mass flow. This model has been constructed by employing full dimensional two-phase mass flow model equations. The model is a set of coupled partial differential equations which is characterized by some new mechanical and dynamical aspects of generalized bulk and shear viscosities, pressure, velocities and effective friction for the mixture where all these are evolving as functions of several dynamical variables, physical parameters, inertial and dynamical coefficients and drift factors. They formulated press
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Hayes, John W., Eric O. Goodwin, Karen A. Shearer, and D. Murray Hicks. "Relationship between background invertebrate drift concentration and flow over natural flow recession and prediction with a drift transport model." Canadian Journal of Fisheries and Aquatic Sciences 76, no. 6 (2019): 871–85. http://dx.doi.org/10.1139/cjfas-2017-0340.

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This study advances understanding of the flow dependency of invertebrate drift in rivers and its relevance to drift-feeding fish. Background drift concentration varied spatially and with flow over natural flow recession (lower mid-range to low flow) in a reach of a New Zealand river, largely consistent with passive entrainment. Seven taxonomic groups (dominated by Leptophlebiidae and Chironomidae) exhibited positive drift concentration–flow relationships, and one (sandy/stony-cased caddisflies (Conoesucidae)) exhibited negative relationships. A mechanistic drift transport model accurately pred
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Feng, Xue, Xi-fu Wang, and Dong-fan Xie. "Lateral Drift Behavior Analysis in Mixed Bicycle Traffic: A Cellular Automaton Model Approach." Mathematical Problems in Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/7962171.

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Bicycle movements are always associated with lateral drifts. However, the impacts of lateral drift behavior, as well as variable lateral clearance maintaining behavior due to the variation of drift intensity, on mixed bicycle flow are not clear. This paper establishes a new cellular automata model to study typical characteristics of mixed bicycle traffic induced by lateral drift and its accompanying behavior. Based on derived positive correlation between passing speed and drift speed through survey, the occurrence probability of lateral drift and the degree of maintained lateral clearance are
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Hibiki, T., and M. Ishii. "Distribution parameter and drift velocity of drift-flux model in bubbly flow." International Journal of Heat and Mass Transfer 45, no. 4 (2002): 707–21. http://dx.doi.org/10.1016/s0017-9310(01)00195-8.

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HERREMAN, W., and P. LESAFFRE. "Stokes drift dynamos." Journal of Fluid Mechanics 679 (April 19, 2011): 32–57. http://dx.doi.org/10.1017/jfm.2011.109.

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Fluid particles can have a mean motion in time, even when the Eulerian mean flow disappears everywhere in space. In the present article, we demonstrate that this phenomenon, known as the Stokes drift, plays an essential role in the problem of magnetic field generation by fluctuation flows (kinematic dynamo) at high Rm. At leading order, the dynamo is generated by the Stokes drift that acts as if it were a mean flow. This result is derived from a mean-field dynamo theory in terms of time averages, which reveals how classical expressions for alpha and beta tensors actually recombine into a singl
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Yamaguchi, Kohei, Shingo Tomiyama, Toshifumi Igarashi, Saburo Yamagata, Masanori Ebato, and Masatoshi Sakoda. "Improvement in pH and Total Iron Concentration of Acid Mine Drainage after Backfilling: A Case Study of an Underground Abandoned Mine in Japan." Minerals 11, no. 11 (2021): 1297. http://dx.doi.org/10.3390/min11111297.

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If the excavated underground veins are not backfilled, they may be a factor in the continued outflow of acid mine drainage (AMD). The flow rate of AMD can be reduced by backfilling underground drifts from abandoned mines. In addition, the quality of AMD may be improved as the flow rate of AMD reduces. In this paper, the quality of the AMD after backfilling was evaluated by a three-dimensional geochemical analysis model when the groundwater level was recovered after backfilling. The measured dissolved iron (Fe) and sulfate ion (SO42−) concentrations and pH before backfilling the drift were repr
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Goda, Hiroshi, Takashi Hibiki, Seungjin Kim, Mamoru Ishii, and Jennifer Uhle. "Drift-flux model for downward two-phase flow." International Journal of Heat and Mass Transfer 46, no. 25 (2003): 4835–44. http://dx.doi.org/10.1016/s0017-9310(03)00309-0.

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Brooks, Caleb S., Basar Ozar, Takashi Hibiki, and Mamoru Ishii. "Two-group drift-flux model in boiling flow." International Journal of Heat and Mass Transfer 55, no. 21-22 (2012): 6121–29. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.06.031.

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Longo, J., and F. Stern. "Effects of drift angle on model ship flow." Experiments in Fluids 32, no. 5 (2002): 558–69. http://dx.doi.org/10.1007/s00348-001-0397-0.

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Dissertations / Theses on the topic "Drift flow model"

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PROVENZANO, CARLOS EUGENIO CARCERONI. "NUMERICAL PREDICTION OF TWO-PHASE FLOW IN PIPELINE WITH THE DRIFT-FLUX MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10669@1.

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Na produção de gás e petróleo em campos de águas profundas são comumente encontrados trechos verticais de dutos (risers) na aproximação final à plataforma. Nesta configuração, podem ocorrer escoamentos bifásicos no regime de golfadas severas (severe slug) que gera alternância na produção da fase gasosa e líquida. Esta alternância é caracterizada por períodos de produção de gás sem líquido seguido de altas taxas de produção de ambas as fases. O regime severo de golfadas é geralmente descrito em quatro fases: formação da golfada, produção da golfada, rompimento da golfada pela fase gás e
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Munkejord, Svend Tollak. "Analysis of the two-fluid model and the drift-flux model for numerical calculation of two-phase flow." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-679.

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<p>Flerfasestrømning er av betydning i en lang rekke anvendelser, blant annet i olje- og gassindustrien, i den kjemiske og i prosessindustrien, inkludert i varmepumpende systemer, samt i sikkerhetsanalyse av kjernekraftverk. Denne avhandlingen analyserer modeller for tofasestrømning, og metoder for numerisk løsning av disse modellene. Den er derfor ett bidrag til å utvikle pålitelige ingeniørverktøy for flerfase-anvendelser. Slike verktøy trengs og forventes av ingeniører i industrien.</p><p>Den tilnærmede Riemann-løseren framsatt av Roe har blitt studert. Roe-skjema for tre ulike modeller for
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Kupčíková, Laura. "Částice plovoucí na volné hladině vln." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444637.

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This master’s thesis deals with analytical and numerical description of surface gravity waves. Wave theories and their influence on water particle movement is described in the theoretical part of the thesis. Water particle moves in the same direction as wave propagation and this phenomenon is called Stokes drift. It has a significant influence on sediment transport and floating particle movement at water free surface. The experimental part consists of wave profile monitoring and water particle tracking in a wave flume with wave generator and beach model. The experimental results are compared w
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Wetind, Ruben. "Two-phase flows in gas-evolving electrochemical applications." Doctoral thesis, Stockholm, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3223.

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Carvalho, Sávider Conti. "Modelo de mistura aplicado para a previsão de Holdup e gradiente de pressão bifásico em duto anular de grande diâmetro." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-16092013-111728/.

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O escoamento bifásico é muito importante para vários ramos industriais. As misturas bifásicas podem escoar em diversas configurações, as quais são chamadas de padrões de escoamento, e que, ao longo dos anos, receberam diversas classificações. Neste trabalho foi estudado o padrão bolhas dispersas em duto anular. Os trabalhos sobre escoamento bifásico em geometria anular são mais escassos, especialmente quando se trata de dutos anulares de grande dimensão. Dentre os modelos existentes para a modelagem do escoamento bifásico, trabalhamos com o modelo de mistura (Drift Flux), pois, apesar das alta
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Smet, Christophe Olivier. "Asymmetric drift and halo flattening in disk galaxies." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7203/.

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The main result in this work is the solution of the Jeans equations for an axisymmetric galaxy model containing a baryonic component (distributed according to a Miyamoto-Nagai profile) and a dark matter halo (described by the Binney logarithmic potential). The velocity dispersion, azimuthal velocity and some other interesting quantities such as the asymmetric drift are studied, along with the influence of the model parameters on these (observable) quantities. We also give an estimate for the velocity of the radial flow, caused by the asymmetric drift. Other than the mathematical beaut
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Lavieville, Jérôme. "Simulations numériques et modélisation des interactions entre l'entrainement par la turbulence et les collisions interparticulaires en écoulements gaz-solide." Rouen, 1997. http://www.theses.fr/1997ROUES010.

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L'influence d'une turbulence homogène d'air et de collisions binaires sur le comportement macroscopique d'un nuage de particules solides monodispersées, est étudiée à partir de simulations numériques des grandes échelles (LES), du suivi lagrangien des particules et du traitement direct des chocs. Le domaine de calcul est 3D périodique dans lequel seule une force de trainée visqueuse s'exerce du fluide sur les particules. Le diamètre, la densité et la fraction volumique de la phase dispersée varient, d'une simulation à l'autre, pour reproduire différents temps de relaxation particulaire et temp
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Marti, Clelia Luisa. "Exchange processes between littoral and pelagic waters in a stratified lake." University of Western Australia. Centre for Water Research, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0005.

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[Truncated abstract] The lake boundaries are an important source of sediment, nutrients and chemicals. For life inside the lake, the exchange between the lake boundaries (littoral) and lake interior (pelagic) is of central importance to Limnology as the net flux of nutrients into the water column is both the driving force and limiting factor for most algae blooms found during the stratification period. Consequently, the understanding of the relevant processes defining such an exchange is a further step toward a sound basis for future decisions by lake managers in order to ensure high water qua
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Sgalla, Reneé Jordashe Franco. "Investigação cinética de modos geodésicos de baixas frequências em plasmas magnetizados." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-03092014-094958/.

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Devido à sua importância em turbulência causada por ondas de deriva e à aplicação com propósitos em diagnósticos de plasma, a investigação de fluxos zonais (ZF) e modos acústicos geodésicos (GAM) tem atraído bastante atenção na literatura em física de plasmas. Nesta tese, primeiramente consideramos efeitos de equilíbrio com rotação poloidal e toroidal nestes modos, posteriormente investigamos efeitos diamagnéticos em GAM a partir de um modelo de dois fluido, no qual incluímos viscosidade paralela de íons e, na parte final, consideramos amortecimento de Landau e efeitos diamagnéticos simulta
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Shirdel, Mahdy. "Development of a coupled wellbore-reservoir compositional simulator for damage prediction and remediation." 2013. http://hdl.handle.net/2152/21391.

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During the production and transportation of oil and gas, flow assurance issues may occur due to the solid deposits that are formed and carried by the flowing fluid. Solid deposition may cause serious damage and possible failure to production equipment in the flow lines. The major flow assurance problems that are faced in the fields are concerned with asphaltene, wax and scale deposition, as well as hydrate formations. Hydrates, wax and asphaltene deposition are mostly addressed in deep-water environments, where fluid flows through a long path with a wide range of pressure and temperature varia
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Books on the topic "Drift flow model"

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Arihood, Leslie D. Processing, analysis, and general evaluation of well-driller logs for estimating hydrogeologic parameters of the glacial sediments in a ground-water flow model of the Lake Michigan Basin. U.S. Dept. of the Interior, U.S. Geological Survey, 2009.

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Arihood, Leslie D. Processing, analysis, and general evaluation of well-driller logs for estimating hydrogeologic parameters of the glacial sediments in a ground-water flow model of the Lake Michigan Basin. U.S. Dept. of the Interior, U.S. Geological Survey, 2009.

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T, Harte Philip, United States. Environmental Protection Agency. Region I, and Geological Survey (U.S.), eds. Reassessment of hydrogeologic data and refinement of a regional ground-water-flow model for the Milford-Souhegan glacial-drift aquifer, Milford, New Hampshire. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Bruno, Michael S. A coupled hydrodynamic and ice floe movement model. Woods Hole Oceanographic Institution, 1986.

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Harte, Philip T. Construction and calibration of numerical ground-water-flow models of the western half of the Milford-Souhegan glacial-drift aquifer, Milford, New Hampshire. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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Martin, Peter T. Incident detection algorithm evaluation: Draft final report. Utah Dept. of Transportation, Research Division, 2001.

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Alok, Majumdar, and United States. National Aeronautics and Space Administration., eds. A generalized fluid system simulation program to model flow distribution in fluid networks: Draft paper ... National Aeronautics and Space Administration, 1998.

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Mazzaferro, David L. Estimation of the recharge area of a pumped, stratified-drift aquifer in Connecticut by simulation modeling. Dept. of the Interior, U.S. Geological Survey, 1989.

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Mazzaferro, David L. Estimation of the recharge area of a pumped, stratified-drift aquifer in Connecticut by simulation modeling. Dept. of the Interior, U.S. Geological Survey, 1989.

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Mazzaferro, David L. Estimation of the recharge area of a pumped, stratified-drift aquifer in Connecticut by simulation modeling. Dept. of the Interior, U.S. Geological Survey, 1989.

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Book chapters on the topic "Drift flow model"

1

Ishii, Mamoru, and Takashi Hibiki. "Drift-Flux Model." In Thermo-Fluid Dynamics of Two-Phase Flow. Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-29187-1_13.

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Ishii, Mamoru, and Takashi Hibiki. "Drift-Flux Model." In Thermo-Fluid Dynamics of Two-Phase Flow. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7985-8_13.

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Ishii, Mamoru, and Takashi Hibiki. "One-Dimensional Drift-Flux Model." In Thermo-Fluid Dynamics of Two-Phase Flow. Springer US, 2006. http://dx.doi.org/10.1007/978-0-387-29187-1_14.

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Ishii, Mamoru, and Takashi Hibiki. "One-Dimensional Drift-Flux Model." In Thermo-Fluid Dynamics of Two-Phase Flow. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7985-8_14.

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Tan, Zhirong, Gang Xing, Xing Gao, and Xin Cui. "Turbulent Flow Simulation of Bridge Piers and Navigation Safety of Ships in Curved River Sections with Variable Water Level." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_64.

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AbstractSome of the bridges across the Yangtze River in the Three Gorges Reservoir area are in the curved section, and the collision prevention of bridges is a hot issue in the current industry. The system of ships sailing across bridges is a complex system in the discipline of transportation engineering. It is affected by ship conditions, channel conditions, meteorology and hydrology, navigation management and human factors. In order to grasp the influence of turbulent flow near the piers of bridges in curved river sections and oblique flow during variable water level periods on ships crossin
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Zhang, Zhenguo, Xiaochang Li, Sichao Liu, Sichao Tan, Hai Zhao, and Ruifeng Tian. "Research on Boiling and Coupled Heat Transfer of OTSG with Drift Flow Single Fluid Model." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8899-8_57.

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Wang, Rongrong, Aiping Sun, Shouyuan Zhang, Hongyu Cheng, and Gensheng Zhao. "Improvement Measures of Navigable Flow Conditions in the Baihutan Hydro-Junction in Changshanjiang River, China." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_40.

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AbstractThe Baihutan hydro-junction of Changshanjiang River is located in the straight section of S-shaped channel, and the upstream approach channel is located in the concave bank of the bendy section of river. Navigable flow conditions in the entrance area of upstream and the bend connection area are complicated and disordered under the influence of circumfluence. Ships are prone to drift due to the high-speed transverse flow, which makes it difficult to meet the requirements of safe navigation. In the present study, the navigable flow conditions were evaluated by building a 1:80 hydraulic m
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Röck, H., and F. Koschmieder. "Model-Based Phasor Control of a Coriolis Mass Flow Meter (CMFM) for the Detection of Drift in Sensitivity and Zero Point." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00578-7_13.

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Yu, Kaiwen, Changhai Han, Kang Han, Jianjun Zhao, and Zhiguang Yu. "Experimental Study on Navigation Flow Condition of Downstream Approach Channel of Navigation Facilities of Baise Water Conservancy Project." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_130.

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AbstractBaise Water Conservancy Project is the second cascade in the Yujiang River planning, and its navigation facilities are one of the key projects to get through Yunnan and Guizhou. The exit of the downstream approach channel of the navigation facilities of the Baise Water Conservancy Project is located about 700 m downstream of the Dongsun Hydropower Station, so the operation of Dongsun Hydropower Station has a direct impact on the navigation flow condition of the approach channel. In addition, the topography of the river also has an obvious influence on the navigation conditions at the e
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Gjevik, Bjørn. "Models of Drift and Dispersion in Tidal Flows." In Waves and Nonlinear Processes in Hydrodynamics. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0253-4_27.

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Conference papers on the topic "Drift flow model"

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Wang, Pan, Minyao Liu, Zeyi Li, Zixuan Wang, and Xuejiao Chen. "Unsupervised Real-Time Flow Data Drift Detection Based on Model Logits for Internet of Things Network Traffic Classification." In 2024 IEEE International Conferences on Internet of Things (iThings) and IEEE Green Computing & Communications (GreenCom) and IEEE Cyber, Physical & Social Computing (CPSCom) and IEEE Smart Data (SmartData) and IEEE Congress on Cybermatics. IEEE, 2024. http://dx.doi.org/10.1109/ithings-greencom-cpscom-smartdata-cybermatics62450.2024.00054.

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Hibiki, Takashi, and Mamoru Ishii. "Distribution Parameter and Drift Velocity of Drift-Flux Model in Bubbly Flow." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22060.

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In view of the practical importance of the drift-flux model for two-phase flow analysis in general and in the analysis of nuclear-reactor transients and accidents in particular, the distribution parameter and the drift velocity have been studied for bubbly-flow regime. The constitutive equation that specifies the distribution parameter in the bubbly flow has been derived by taking into account the effect of the bubble size on the phase distribution, since the bubble size would govern the distribution of the void fraction. A comparison of the newly developed model with various fully-developed b
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Agranat, Vladimir M., Sergei V. Zhubrin, and Igor Pioro. "Multi-Group Two-Phase Flow Model of Drift Drop Plume." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30010.

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A homogeneous two-phase multi-group model of drift drop plumes emerging from natural draft cooling towers has been developed and validated using the experimental data obtained in the 1977 Chalk Point Dye Tracer Experiment (CPDTE). The conservation equations for mass fractions of water droplets having different sizes are solved in addition to the standard conservation equations for mixture mass, momentum, energy, water vapor mass fraction and turbulent quantities (turbulent kinetic energy and its dissipation rate). Extra terms are provided to the conservation equations for mass fractions of liq
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Končar, Boštjan, Ivo Kljenak, and Borut Mavko. "Analysis of RELAP5 Drift-Flux Model for Vertical Subcooled Boiling Flow at Low Pressure Conditions." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1535.

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Abstract The RELAP5/MOD3.2.2 Gamma code was assessed against low pressure boiling flow experiments performed by Zeitoun and Shoukri (1997) in a vertical annulus. The predictions of subcooled boiling bubbly flow showed that the present version of the RELAP5 code underestimates the void fraction increase along the flow and strongly overestimates the vapor drift velocity. It is shown that in the calculations, a higher vapor drift velocity causes a lower interphase drag and may be a possible reason for underpredicted void fraction development. A modification is proposed, which introduces the repla
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Lee, Woochan, and Paulo Waltrich. "A Drift-Flux Model for Upward Two-Phase High-Velocity Flow in Large Diameter Pipes." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211071-ms.

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Abstract This study proposes the evaluation and development of a drift-flux model for upward two-phase high-velocity flow in large diameter pipes. A case where the proposed model is applicable is WCD (Worst-Case-Discharge) calculations for offshore wells. WCD assumes relatively larger pipe diameters and higher flow rates than the flow experiments at laboratory conditions utilized to develop most of the flow models available in the literature. Most of the two-phase flow models describe flow regime transitions as discrete processes by assigning the required void fraction or velocity for each flo
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Heidari, Mohammad, Christopher Istchenko, William Bailey, and Terry Stone. "Use of Horizontal Drift-Flux Models For Simulating Wellbore Flow in SAGD Operations." In SPE Reservoir Simulation Conference. SPE, 2021. http://dx.doi.org/10.2118/203955-ms.

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Abstract The paper examines new horizontal drift-flux correlations for their ability to accurately model phase flow rates and pressure drops in horizontal and undulating wells that are part of a Steam-Assisted Gravity Drainage (SAGD) field operation. Pressure profiles within each well correlate to the overall performance of the pair. SAGD is a low-pressure process that is sensitive to reservoir heterogeneity and other factors, hence accurate simulation of in situ wellbore pressures is critical for both mitigating uneven steam chamber evolution and optimizing wellbore design and operation. Rece
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Gadgil, Ashwin A., and Robert E. Randall. "Two Phase Annular Flow Approximation Using 1-D Flow Equations Coupled With a Drift Flux Model for Concurrent Flow in Vertical or Near Vertical Channels." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61480.

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Annular flow is a flow regime of two-phase gas-liquid flow dominated by high gas flowrate moving through the center of the pipe (gas core). In this paper we have developed and studied an innovative phenomenological model which combines the Zuber &amp; Findlay’s Drift Flux Model’s weighted mean value approach [1] with the 1-D flow approximation equations. The flow is described in terms of a distribution parameter and an averaged local velocity difference between the phases across the pipe cross-section. The average void fraction is calculated as a function of the ratio of weighted mean gas velo
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Bhagwat, Swanand M., and Afshin J. Ghajar. "Flow Pattern and Pipe Orientation Independent Semi-Empirical Void Fraction Correlation for a Gas-Liquid Two Phase Flow Based on the Concept of Drift Flux Model." In ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ht2012-58048.

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A flow pattern and pipe orientation independent void fraction correlation is proposed in the present study. The correlation is based on the concept of drift flux model and proposes two separate expressions to model distribution parameter and drift velocity. The distribution parameter is expressed as a function of pipe orientation, phase superficial velocities and the void fraction in implicit form, while the drift velocity parameter is modeled as a function of fluid thermo physical properties, pipe orientation and void fraction. The drift velocity equation proposed by Zukoski [1] is extended f
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Shen, Xiuzhong, Kaichiro Mishima, and Hideo Nakamura. "Flow-Induced Void Fraction Transition Phenomenon in Two-Phase Flow." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29630.

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The flow-induced void fraction transition phenomenon was observed in an upward air-water two-phase flow in a vertical pipe with inner diameter D = 200 mm and height z = 25 m. As the two-phase flow develops in a vertical pipe, the void fraction increases firstly in the flow direction in bubbly flow, then decreases in the flow direction, finally increase again. The flow-induced void fraction transition shows an N-shaped changing manner. The present experimental investigation revealed that this phenomenon was attributed to the formation and the growth of local dominant large bubbles in the flow.
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Okafor, Chinonso, Abdulwahab GIWA, and Abdulkabir Gidado. "Modelling and Simulation of Liquid-Loaded Gas Flow." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/211952-ms.

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Abstract Liquid loading of gas wells gives rise to problems in the wells and diminishes their complete recuperation. A few authors proposed various models to predict the beginning of liquid loading in gas wells, yet the outcomes from the models regularly show disparities. Turner et al.'s basic model was developed based on the understanding that the liquid droplet is a sphere and stays spherical all through the whole wellbore. Thereafter, Li's model was formulated with the understanding that the fluid drops are flat in shape and stays the same all through. Furthermore, Maduabuchi's model was pr
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Reports on the topic "Drift flow model"

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J.T. BIRKHOLZER, C. F. TSANG, Y. W. TSANG, J. S. W. WANG. DRIFT SCALE MODELING: STUDY OF UNSATURATED FLOW INTO A DRIFT USING A STOCHASTIC CONTINUUM MODEL. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/780415.

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Birkholzer, J. T., C. F. Tsang, Y. W. Tsang, and J. S. Wang. Drift Scale Modeling: Study of Unsaturated Flow into a Drift Using a Stochastic Continuum Model. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/760278.

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Kinikles, Dellena, and John McCartney. Hyperbolic Hydro-mechanical Model for Seismic Compression Prediction of Unsaturated Soils in the Funicular Regime. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2022. http://dx.doi.org/10.55461/yunw7668.

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A semi-empirical elasto-plastic constitutive model with a hyperbolic stress-strain curve was developed with the goal of predicting the seismic compression of unsaturated sands in the funicular regime of the soil-water retention curve (SWRC) during undrained cyclic shearing. Using a flow rule derived from energy considerations, the evolution in plastic volumetric strain (seismic compression) was predicted from the plastic shear strains of the hysteretic hyperbolic stress-strain curve. The plastic volumetric strains are used to predict the changes in degree of saturation from phase relationships
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McAlpin, Jennifer, and Cassandra Ross. Houston Ship Channel numerical model update and validation. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47498.

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The Houston Ship Channel (HSC) is one of the busiest deep-draft navigation channels in the United States and must be able to accommodate increasing vessel sizes. The US Army Corps of Engineers, Galveston District (SWG), requested the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, update and revalidate a previously developed three-dimensional Adaptive Hydraulics (AdH) hydrodynamic and sediment model of the HSC, Galveston, and Trinity Bays. The model is necessary for analyzing potential impacts on salinity, sediment, and hydrodynamics due to alternatives des
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Copeland, Ronald, and James Lewis. Technical assessment of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers: Mississippi River HEC-6T model. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45160.

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The HEC-6T 1D numerical sedimentation model was used to evaluate the long-term and system-wide sedimentation effects of modifying the operation schedule at the Old River Control Complex (ORCC). The changes evaluated were the increase and decrease of the percentages of flow diverted from the Mississippi River at the ORCC and the modification of the distributions through the four ORCC structures. Also evaluated were dredging scenarios that removed sediment from the bed of the Mississippi River at the ORCC. Sedimentation effects for several operation and dredging scenarios were compared to a Base
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DCE-MRI V.2, Consensus QIBA Profile. Chair Hendrik Laue and James O'Connor. Radiological Society of North America (RSNA)/Quantitative Imaging Biomarkers Alliance (QIBA), 2023. https://doi.org/10.1148/qiba/20231206.

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The goal of the DCE-MRI quantification QIBA Profile version 2.0 is to provide an update from the Dynamic Contrast Enhanced MRI (DCE-MRI) Quantification profile (version 1.0, dated July 1, 2012) in order to include the use of 3 Tesla (T) MRI and the use of parallel imaging with receiver coil arrays. While many pharmacokinetic models have been described, this QIBA Profile (DCE-MRI Quantification) specifically addresses the physiological parameter Ktrans derived from the Tofts or generalized kinetic model (GKM) (1), which is correlated with the vessel (surface/area product and permeability) and h
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