Numerical Modeling for Sand Desert Morphology and Forming Process in Fixed, Semi-Fixed and Free Desert Field
Numerical Modeling for Sand Desert Morphology and Forming Process in Fixed, Semi-Fixed and Free Desert Field
复制标题
DOI：
10.4028/www.scientific.net/amr.33-37.1055
复制
发表时间：
2008-03
期刊：
影响因子：
--
通讯作者：
Xamxinur Abdikerem;Z. Xu;Mamtimin Gheni
中科院分区：
文献类型：
--
作者：
Xamxinur Abdikerem;Z. Xu;Mamtimin Gheni
本研究考虑风沙流动过程，对固定、半固定和自由沙地的沙漠地貌形成过程进行数值模拟，提出了基于流体动力学和沙粒运动学的数值模型。为分析沙体运动现象的实际特征，引入河流流场和沙漠流场，考虑沙体的形状、大小和质量，建立数值分析数学模型，以描述固定、半固定和完全自由的沙地沙漠地貌过程。然后根据真实的固定、半固定和自由沙流场，与河流流场耦合，建立多种模型并进行数值模拟。
In this study, to conduct numerical simulation of desert physiognomy forming process in fixed, semi-fixed and free sand desert field by considering the sand flow process by wind, the numerical model based on the hydrodynamics and sand grains kinemics are proposed. For analyze the actual characteristic of sand movement phenomenon, the stream flow field and desert flow field are introduced and mathematical model for numerical analysis are established by considering the sand shape, size and mass in order to describe the fixed, semi-fixed and fully free sand desert physiographical process. Then according to the real fixed, semi-fixed and free sand flow field by coupling with stream flow field, several models are made and numerical simulations are conducted.