发布时间：2021-09-20

文章标题：【学术成果】一篇通讯作者文章在国际学术期刊 The Euro Phys J E 上发表

内容：

我们基于阻尼谐振子模型和量纲分析，从一个奇怪的角度推导出颗粒输运过程中的饱和长度表达，从而统一了若干矛盾~

Improved analytical model for the relaxation process of aeolian sand transport, Eur. Phys. J. E (2021) 44:116

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The process from the initial sand movement to sand flux saturation is described as the relaxation
of aeolian sand transport. For this relaxation process, most existing models distinguish the conditions with
and without upwind sand flux, therefore lacking in generality. An improved analytical model is proposed
in this paper, which incorporates the phenomena of overshoot and equilibrium and the concept of the
region of initiation by fluid, and is able to unify the cases with and without upwind sand flux. Within
the proposed model, a new definition of the saturation length is proposed based on the analogy between
two damping oscillation models, and its constancy is physically interpreted and verified with wind tunnel
experimental data. In comparison with the existing models, the proposed model agrees better with the
measurements of the process of sand transport, thereby shedding light on the understanding of aeolian
sand transport under complex circumstances.