A double distribution lattice Boltzmann scheme for unsteady Conjugate Heat Transfer: The DD-CHT LB method
| Autor: | Patrick Perré, Moudhaffar Nouri, Rihab Hamila |
|---|---|
| Přispěvatelé: | Laboratoire de Génie des Procédés et Matériaux - EA 4038 (LGPM), CentraleSupélec, Centre Européen de Biotechnologies et Bioéconomie (CEBB), École Nationale d’Ingénieurs de Monastir (ENIM) |
| Rok vydání: | 2019 |
| Předmět: |
[PHYS]Physics [physics]
Fluid Flow and Transfer Processes Materials science Mechanical Engineering Lattice Boltzmann methods [PHYS.MECA]Physics [physics]/Mechanics [physics] 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction 01 natural sciences Stability (probability) Control volume 010305 fluids & plasmas Distribution (mathematics) Distribution function 0103 physical sciences Heat transfer [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph] Benchmark (computing) Applied mathematics 0210 nano-technology |
| Zdroj: | International Journal of Heat and Mass Transfer International Journal of Heat and Mass Transfer, Elsevier, 2019, 137, pp.609-614. ⟨10.1016/j.ijheatmasstransfer.2019.03.124⟩ |
| ISSN: | 0017-9310 |
| Popis: | International audience; In this paper, we propose an innovative formulation of the ‘‘well-known” thermal lattice Boltzmannmethod for solving transient conduction heat transfer problems in heterogeneous media: the DD-CHTLB method for Double Distribution – Conjugate Heat Transfer. The main idea of this new formulationis to bring out a second distribution function that represent the effect of thermal inertia and its variationin a heterogeneous media. By adopting this original formulation we achieved several goals, mainly conservationof local properties of the studied media and ensuring the stability of the proposed formulationby avoiding any alteration of the ‘‘well-known” TLBM collision step. Validation of the formulation is fulfilledthrough three different benchmark conduction heat transfer problems in heterogeneous media. Allresults are compared with those obtained by the Control Volume Method (CVM) and excellent agreementswere found. |
| Databáze: | OpenAIRE |
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