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Computational Thermal Sciences: An International Journal

Publication de 6  numéros par an

ISSN Imprimer: 1940-2503

ISSN En ligne: 1940-2554

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.5 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00017 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.279 SNIP: 0.544 CiteScore™:: 2.5 H-Index: 22

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SLUG FLOW HEAT TRANSFER IN MICROCHANNELS: A NUMERICAL STUDY

Volume 7, Numéro 1, 2015, pp. 81-92
DOI: 10.1615/ComputThermalScien.2015012281
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RÉSUMÉ

Two-phase microchannel slug flow has attracted significant interest among researchers due to its wide range of applications. This paper will present some as yet overlooked features of slug flow heat transfer in microchannels, using numerical simulation. Numerical simulations are carried out using ANSYS FLUENT with the volume of fluid (VOF) method with a 2D axisymmetric geometry for a 100 µm inner diameter microchannel with constant wall temperature boundary conditions. Effects of slug flow parameters on heat transfer are discussed showing the heat transfer rate follows a similar trend to existing numerical results. Our results show a significant increase in Nusselt number with liquid−liquid two-phase flow compared to single-phase flow, by up to 200%. The study revealed that capillary number, size of the liquid slugs, as well as the liquid film thickness have an important impact on heat transfer.

CITÉ PAR
  1. Khan Wasim, Chandra A. K., Kishor K., Sachan Sadhana, Alam M. Siraj, Slug formation mechanism for air–water system in T-junction microchannel: a numerical investigation, Chemical Papers, 72, 11, 2018. Crossref

  2. Bordbar Alireza, Kamali Reza, Taassob Arsalan, Thermal Performance Analysis of Slug Flow in Square Microchannels, Heat Transfer Engineering, 41, 1, 2020. Crossref

  3. Moezzi Mahsa, Hannani Siamak Kazemzadeh, Farhanieh Bijan, Hysteretic heat transfer study of liquid–liquid two-phase flow in a T-junction microchannel, International Journal of Heat and Fluid Flow, 77, 2019. Crossref

  4. Moezzi Mahsa, Kazemzadeh Hannani Siamak, Farhanieh Bijan, The role of surface wettability on the heat transfer in liquid-liquid two-phase flow in a microtube, Physics of Fluids, 31, 8, 2019. Crossref

  5. Abdollahi Ayoub, Norris Stuart E., Sharma Rajnish N., Pressure Drop and Film Thickness of Liquid-Liquid Taylor Flow in Square Microchannels, International Journal of Heat and Mass Transfer, 156, 2020. Crossref

  6. Ganguli Arijit A., Pandit Aniruddha B., Hydrodynamics of Liquid-Liquid Flows in Micro Channels and Its Influence on Transport Properties: A Review, Energies, 14, 19, 2021. Crossref

  7. Vasilev M.P., Rusakov B.A., Abiev R.Sh., Gas–liquid slug flow in microfluidic heat exchanger: Effect of gas hold-up and bubble size on pressure drop and heat transfer, International Journal of Thermal Sciences, 173, 2022. Crossref

  8. Sankepally Chandrasekhar, Patel Akash, Vysyaraju Raju R. K., Effect of thermal boundary conditions on heat transfer performance of liquid–liquid Taylor flow through a microchannel with obstruction, The Canadian Journal of Chemical Engineering, 100, 5, 2022. Crossref

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