基于SPH的风沙运动的数值模拟

逯博; 买买提明·艾尼; 金阿芳; 徐玉娟

doi:10.6052/0459-1879-12-312

基于SPH的风沙运动的数值模拟

doi: 10.6052/0459-1879-12-312

新疆大学机械工程学院,乌鲁木齐830047

基金项目: 国家自然科学基金(11102178)和国家重点基础研究发展计划(973计划)(2011CB706601)资助项目.

详细信息

通讯作者:
逯博,硕士研究生,主要研究方向:现代设计方法与数值仿真.E-mail:lunvbo@163.com

中图分类号: O351.2
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- 被引次数: 0
出版历程
- 收稿日期: 2012-11-08
- 修回日期: 2013-01-21
- 刊出日期: 2013-03-18

NUMERICAL SIMULATION OF WIND-BLOWN SAND MOVEMENT BASED ON SPH

School of Mechanical Engineering, Xin Jiang University, Urumqi 830047, China

Funds: The project was supported by the National Natural Science Foundation of China (11102178) and the National Basic Research Program of China (2011CB706601).

摘要

摘要: 运用光滑粒子流体动力学(smoothed particles hydrodynamics, SPH)方法对沙粒和气流的相互耦合运动特性进行了分析,研究提出了风沙流的SPH数值方法并进行了数值模拟. 首先提出了风沙流的SPH建模方法和基本理论,建立了风沙流动的SPH数值模拟平台. 其次通过建立风沙流的SPH 模型并施加边界条件,对自然风作用下沙粒的运动情况进行了数值模拟,详细分析了沙粒运动轨迹及特性,最后通过与相关研究成果对比分析,验证了完善后的SPH方法有效性. 通过考虑气流场的可变性,在风沙流SPH计算模型中引入了加载(起风)和卸载(停风)方式,观察并对比分析了沙粒的运动轨迹和特性. 为进一步研究风沙流的实时动态非线性行为提供了SPH理论基础和数值分析方法.
- 光滑粒子流体动力学 /
- 两相流 /
- 风沙运动
Abstract: The smooth particle hydrodynamics (SPH) method is used to analyze the mutual coupling motion characteristics between sands and the airflow, and the SPH numerical methods of sand flow is proposed and simulated in this study. Firstly, the SPH modeling method and basic theory about the sand flow is proposed and the SPH simulation platform of the flow of sand is established. Secondly, the SPH model and boundary conditions were used to simulate the movement of sand in the wind movement, the motion curve and characteristics of the sand are studied completely. Finally, by contrasting with the related research analysis, the effectiveness of the SPH method completed is verified. Allowing for the variability of the flow field, the way of loading (windy) and unloading (blowing-out) are applied in the SPH calculation model of sand flow, the motion curve and characteristics of the sand have been observed and comparatively studied. It will be helpful to further study of the constant dynamic nonlinear behavior of the sand flow by SPH theoretical basis and numerical analysis.
- smooth particle hydrodynamics (SPH) /
- two-phase flow /
- wind-blown sand movement

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