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Dynamics and Numerical Modeling of Sandy Desert Morphology caused by Aeolian Transport of Sand Particles

机译：沙粒风沙运移引起的沙质沙漠形态动力学和数值模拟

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Wind caused the much sediment fluxes leading to both erosion and deposits in the sandy desertification area, and the much kind of beautiful sandy desert morphologies are formed. This is really crucial to the development of the dynamic behaviour of aeolian transport of sand particles. The sand desert morphologies are representing significant information archives for understanding the desertification problem. Dynamics and numerical modeling provides an essential tool for studying the aeolian transport of sand particle and morphology of sand desert such as ripple and dune. In this study, the mathematical models based on the dynamics are analyzed by considering the several keys as saltation, creep, suspension, avalanche and its threshold condition etc. for sand morphology forming processes. Then due to sand flow field real characteristics, the establishing process of stream flow field are analyzed, and the implication relationships as well as the coupling process between uniform stream flow field and the sand flow field are analyzed. Finally, the sand flow field models is discretized, and different kinds of sandy desert morphology are simulated by considering the sand particle size and mass in fixed, semi-fixed and free sand flow field area.

机译：风在沙质沙漠化地区引起大量的泥沙通量，导致侵蚀和沉积，形成了许多美丽的沙质沙漠形态。这对于开发风沙颗粒的动态传输行为至关重要。沙漠形态代表了重要的信息档案库，可用于了解荒漠化问题。动力学和数值模拟为研究沙粒的风沙运移和沙漠的形态（如波纹和沙丘）提供了重要工具。在这项研究中，基于动力学的数学模型通过考虑盐分，蠕变，悬浮，雪崩及其阈值条件等几个关键因素来分析砂的形态形成过程。然后，根据砂流场的真实特性，分析了流场的建立过程，分析了均匀流场与砂流场的涵义关系以及耦合过程。最后，离散化了沙流场模型，并考虑了固定，半固定和自由沙流场区域内的沙粒大小和质量，模拟了不同类型的沙质沙漠形态。

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来源
《Fracture and strength of solids VII》|2010年|p.1038-1043|共6页
会议地点 Kuala Lumpur(MY);Kuala Lumpur(MY)
作者
XAMXINURAbdikerem; MAMTIMIN Geni; ABDURAHMAN Ablimit; AFANG Jin;
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作者单位

School of Geography and Tourism, Xinjiang Normal University, Urumqi, 830054, China;

School of Mechanical Engineering, Xinjiang University, Urumqi, 830008, China;

School of Mechanical Engineering, Xinjiang University, Urumqi, 830008, China;

School of Aeronautics, Northwestern Polytechnical University, Xi'an.710072.China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
Numerical Model; Sandy Desert Morphology; Aeolian Transport; Sand Particle;

机译：数值模型沙质沙漠形态风沙运输；沙粒;

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1. Particle dynamics method simulations of stochastic collisions of sandy grain bed with mixed size in aeolian sand saltation [J] . You-He Zhou, Wan-Qing Li, Xiao Jing Zheng Journal of Geophysical Research, D. Atmospheres: JGR . 2006,第d15期

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2. Field measurement and numerical modelling of aeolian mass flux distributions on a sandy beach [J] . Steven L. Namikas Sedimentology: Journal of the International Association of Sedimentologists . 2003,第2期

机译：沙滩风沙通量分布的现场测量与数值模拟
3. Numerical simulation of aeolian dusty sand transport in a marginal desert region at the early entrainment stage [J] . Yintang Li, Yi Guo Geomorphology . 2008,第3a4期

机译：夹带初期边缘沙漠地区风沙尘埃运移的数值模拟
4. Dynamics and Numerical Modeling of Sandy Desert Morphology caused by Aeolian Transport of Sand Particles [C] . XAMXINUR Abdikerem, MAMTIMIN Geni, ABDURAHMAN Ablimit International Conference on Fracture and Strength of Solids . 2011

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5. Application of Numerical Modeling to Study River Dynamics: Hydro-Geomorphological Evolution Due to Extreme Events in the Sandy River, Oregon. [D] . Muhammad, Sarkawt Hamarahim. 2017

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7. Application of Numerical Modeling to Study River Dynamics: Hydro-Geomorphological Evolution Due to Extreme Events in the Sandy River, Oregon [O] . Muhammad Sarkawt Hamarahim 2017

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Dynamics and Numerical Modeling of Sandy Desert Morphology caused by Aeolian Transport of Sand Particles

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