论文标题
疏水颗粒水中混合物中的空气夹带如何改变野火后泥流组成
How Air Entrapment in Hydrophobic Particle-Water-Air Mixtures Changes Post-Wildfire Mudflow Composition
论文作者
论文摘要
本文展示了有关空气夹带如何影响雨引起的野火泥浆的特性，这是气泡，水和疏水砂的混合物的关键新见解。泥流的内部结构包含被困气泡的想法是新颖的。这样的混合物可以以令人难以置信的速度向下流下斜坡，在途中迅速爆炸障碍物，并带有大石巨石和物体。由于野火过程中燃烧有机物的沉积，表面土壤颗粒变成了疏水。之后，雨滴，飞溅和侵蚀形成毁灭性的泥流。我们提出了一个新的范式，其中大量空气通过疏水粒子空气吸引力夹在野火后的泥流中。具体的发现量化了被困在砂水浓度中的空气量，能量，重力和砂粒尺寸对结果泥流内部结构的影响。结果，几乎没有覆盖气泡的沙粒的聚集体是泥流混合物的内部结构的特征。
This paper shows critical new insights into how air entrapment affects the properties of rain-induced post-wildfire mudflows as a mixture of air bubbles, water, and hydrophobic sand. The idea of mudflows' internal structure containing trapped air bubbles is novel. Such mixtures can flow down slopes at incredible speeds, quickly blasting obstacles on the way and carrying large stone boulders and objects. The surficial soil particles turn hydrophobic due to the deposition of combusted organic matter during wildfires. Afterward, raindrops, splash, and erosion form devastating mudflows. We propose a new paradigm in which a significant amount of air remains entrapped in post-wildfire mudflow via hydrophobic particle-air attraction. Specific findings quantify the amount of air trapped within sand-water volumetric concentrations, the effect of intermixing energy, gravity, and sand particle size on outcome mudflow internal structure. As a result, little agglomerates of sand particles covering air bubbles characterize the mudflow mixture's internal structure.
