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Two-Dimensional Numerical Model of coupled Heat and Moisture Transport in Frost Heaving Soils.

机译：冻胀土壤中热湿耦合输运的二维数值模型。

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摘要

A two-dimensional numerical model of coupled heat and moisture transport in freezing and thawing soils is developed and tested. For simple but useful geometries the model permits estimation of frost heave and thaw consolidation. The model is coded in FORTRAN IV and is designed to run on mini-class computers. (Author)

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作者
Guymon, G. L.; Hromadka, T. V.;
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年度 1982
页码 1-212
总页数 212
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Frost heave; Heat transmission; Moisture; Thawing; Mathematical models; Scientific literature; Soils; Cold regions; Geothermy; Two dimensional; FORTRAN; Freezing; Estimates; Structures; Alaska; Canada; Documents; Theses; Reprints;

机译：霜冻;热传导;水分;解冻;数学模型;科学文献;土壤;寒冷地区;地热;二维; FORTRaN;冻结;估计;结构;阿拉斯加;加拿大;文献;论文;重印;

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2. An analytical solution for frost heave force by the multifactor of coupled heat and moisture transfer in cold-region tunnels [J] . Zhao Xin, Yang Xiaohua, Zhang Hongwei, Cold regions science and technology . 2020,第Jula期

机译：冷区隧道耦合热和水分转移多因素的霜冻升力分析解决方案
3. Transversely isotropic frost heave modeling with heat-moisture-deformation coupling [J] . Acta Geotechnica: An International journal for Geoengineering . 2020,第5期

机译：横向各向同性霜冻升降型与热湿度变形耦合
4. Numerical Analysis for Transient Two-Dimensional Coupled Heat and Mass Transfer in Soils by Considering the Effect of Seasonal Frost [C] . Maghoul P., Cote J., Fournier M. International conference on cold regions engineering . 2012

机译：考虑季节冻害的土壤瞬态二维传热传质数值分析
5. A modeling and experimental investigation of coupled heat, air, moisture and pollutants transport in building envelope systems. [D] . Li, Hui. 2007

机译：建筑围护系统中热，空气，湿气和污染物的耦合传输的建模和实验研究。
6. A Simulation Model for Coupled Heat Transfer and Moisture Transport under the Action of Heat Source in Unsaturated Soils [O] . Hua Jin, Yi Guo, Hongkai Deng, -1

机译：热源作用下非饱和土壤传热与水分耦合耦合模拟模型
7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。

Two-Dimensional Numerical Model of coupled Heat and Moisture Transport in Frost Heaving Soils.

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