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Início Arquivos Thermal Letter Representantes Futuras reuniões Assembléia das Conferências Internacionais de Transferência de Calor
International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

LATTICE BOLTZMANN SIMULATION OF HEAT AND MASS TRANSFER DURING SOIL FREEZING WITH THE CONSIDERING OF PRE-MELTED FILM

Fei Xu
Harbin Institute of Technology, College of Energy and Environment Engineering

Bingxi Li
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China

Yaning Zhang
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China; Department of Bioproducts and Biosystems Engineering, University of Minnesota, St. Paul, 55108, USA

Zhonglin Du
Harbin Institute of Technology, College of Energy and Environment Engineering

Wenke Zhao
School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

DOI: 10.1615/IHTC16.pma.022558
pages 8023-8045


Palavras-chave: Two-phase/Multiphase flow, Porous media, Lattice Boltzmann, soil freezing, pre-melted film

Resumo

In this paper, a mesoscopic numerical model for the simulation of soil freezing is presented, the developed model takes the consideration of the premelted water film. By using the developed model, particular volumetric water content variations were formed during the soil freezing process, the volumetric water content decreased gradually with temperature after freezing point. What's more, we also presented the simulation results of soil freezing for different temperature gradients and particle size distributions. Simulation results shown that liquid water content variations significantly affected by the temperature gradient and particle size distribution. So, the pre-melted water film can't be ignored for accurately describing the characteristic of soil freezing process in numerical simulations.

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