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首页> 外文会议>GeoShanghai International Conference; 20060606-08; Shanghai(CN) >Fluid Distribution in Porous Media under Microgravity
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Fluid Distribution in Porous Media under Microgravity

机译：微重力作用下多孔介质中的流体分布

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Understanding pore fluid distribution in porous media is an essential task in exploring plant growth under microgravity. This paper presented experimental and modeling investigations on pore fluid distribution at residual saturation in porous media in microgravity. First, experiments were conducted aboard NASA's KC-135 flights, which provided gravity conditions of 1g, 2g, and 0.01g. Glass beads were used as porous media. Hexadecane, a petroleum compound immiscible with and lighter than water, was used as wetting fluid at residual saturation. Nitrogen freezer was used to solidify the discontinuous Hexadecane ganglia in glass beads to preserve the pore fluid changes during different gravity conditions. Particle separation and increased bulk volume of samples under microgravity were observed. In the modeling phase, a 3D pore network model was developed to investigate the spatial distribution of pore fluid. Cubic packing (the loosest packing) of Ottawa sand was used to represent the particle separation under 0g. The modeling results revealed non-uniform spatial distribution of pore fluid under 0g.
机译：了解多孔介质中的孔隙流体分布是探索微重力下植物生长的重要任务。本文介绍了微重力作用下多孔介质中残余饱和孔隙流体分布的实验和模型研究。首先，在NASA的KC-135飞机上进行了实验，该飞机提供了1g，2g和0.01g的重力条件。玻璃珠用作多孔介质。十六烷，一种与水不混溶并且比水轻的石油化合物，被用作残留饱和度的润湿液。氮气冷冻机用于固化玻璃珠中不连续的十六烷神经节，以保持在不同重力条件下孔隙流体的变化。在微重力下观察到颗粒分离和样品体积增加。在建模阶段，开发了3D孔隙网络模型以研究孔隙流体的空间分布。渥太华沙的立方堆积（最松散的堆积）用于表示0g以下的颗粒分离。模拟结果表明，0g以下孔隙流体的空间分布不均匀。

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