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Computational Thermal Sciences: An International Journal

Publicado 6 números por año

ISSN Imprimir: 1940-2503

ISSN En Línea: 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

Indexed in

HEAT TRANSFER IN NATURAL CONVECTION WITH FINITE-SIZED PARTICLES CONSIDERING THERMAL CONDUCTANCE DUE TO INTER-PARTICLE CONTACTS

Volumen 7, Edición 5-6, 2015, pp. 385-404
DOI: 10.1615/ComputThermalScien.2016014791
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SINOPSIS

The heat transfer problem in solid-dispersed two-phase flow is numerically studied. Temperature gradient within the finite-sized particles and inter-particle heat flux due to collisions are considered, and those effects on the flow structure and heat transfer are discussed. The interaction between fluid and particles is treated by our original immersed solid approach. For the conjugate heat transfer problems, to satisfy the thermal condition at the fluid-solid interface, our interfacial heat flux model is employed. Also, the interfacial flux model is extended to incorporate the heat conduction due to inter-particle contacts, based on 2D and axisymmetric contact heat resistance solutions. The method is applied to 2D and 3D natural convection problems including multiple particles in a confined domain under relatively low Rayleigh numbers (104−106). Heat transfer and particle behaviors are studied for different solid volume fractions (up to about 50%) and heat conductivity ratios (solid to fluid) ranging between 10−3 and 103. Under high solid volume fraction conditions, the particles are observed to form densely concentrated regions, where heat flow tends to channel through the contacting points. In three-dimensional solid-dispersed flows, by decomposing the heat flux into the contributions of the convection and conduction, the change of the major heat transfer mode is studied for different solid volume fractions and conductivity ratios.

CITADO POR
  1. Gu Jingchen, Takeuchi Shintaro, Kajishima Takeo, Influence of Rayleigh number and solid volume fraction in particle-dispersed natural convection, International Journal of Heat and Mass Transfer, 120, 2018. Crossref

  2. TAKEUCHI Shintato, Study of Heat Transfer Mechanism with Coherent Flow Structure in Particle-dispersed Two-phase Flow, Hosokawa Powder Technology Foundation ANNUAL REPORT, 24, 2016. Crossref

  3. Gu Jingchen, Takeuchi Shintaro, Fukada Toshiaki, Kajishima Takeo, Vortical flow patterns by the cooperative effect of convective and conductive heat transfers in particle-dispersed natural convection, International Journal of Heat and Mass Transfer, 130, 2019. Crossref

  4. Gu Jingchen, Sakaue Motoki, Takeuchi Shintaro, Kajishima Takeo, An immersed lubrication model for the fluid flow in a narrow gap region, Powder Technology, 329, 2018. Crossref

  5. Kajishima Takeo, Immersed boundary/solid method for the numerical simulation of particle-laden flows, Fluid Dynamics Research, 51, 5, 2019. Crossref

  6. Takeuchi Shintaro, Miyamori Yuri, Gu Jingchen, Kajishima Takeo, Flow reversals in particle-dispersed natural convection in a two-dimensional enclosed square domain, Physical Review Fluids, 4, 8, 2019. Crossref

  7. Prakhar Suryansh, Prosperetti Andrea, Linear theory of particulate Rayleigh-Bénard instability, Physical Review Fluids, 6, 8, 2021. Crossref

  8. Hori Naoki, Rosti Marco E., Takagi Shu, An Eulerian-based immersed boundary method for particle suspensions with implicit lubrication model, Computers & Fluids, 236, 2022. Crossref

  9. Xiao Wei, Zhang Hancong, Luo Kun, Mao Chaoli, Fan Jianren, Immersed boundary method for multiphase transport phenomena, Reviews in Chemical Engineering, 38, 4, 2022. Crossref

  10. Fukada T., Takeuchi S., Kajishima T., Particle subgrid stress models for large Stokes numbers in particle-laden turbulence, Journal of Fluid Mechanics, 946, 2022. Crossref

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