| 耗散粒子动力学对颗粒沉降问题的研究 |
| |
| 引用本文： | 孔轶华,张楚华,席光,王超.耗散粒子动力学对颗粒沉降问题的研究[J].工程热物理学报,2008,29(1). |
| |
| 作者姓名： | 孔轶华 张楚华 席光 王超 |
| |
| 作者单位： | 西安交通大学能源与动力工程学院,陕西西安,710049 |
| |
| 基金项目： | 国家自然科学基金
,
国家高技术研究发展计划(863计划)
,
教育部跨世纪优秀人才培养计划 |
| |
| 摘 要： | 给出了一种耗散粒子动力学方法模拟流体流动的理论及数值模型,包括控制方程组、边界条件、数值计算方法.使用耗散粒子动力学方法编程计算了颗粒在重力作用下的沉降运动,观察到颗粒的质量和所受重力对颗粒运动轨迹的影响,且颗粒质量越小,所受重力越小,颗粒运动所表现出的随机性越强烈.从而验证了所采用的数学模型、计算方法在流动数值模拟中的可行性及潜在优势.
|
| 关 键 词： | 介观模型 耗散粒子动力学 颗粒沉降 耗散 粒子动力学 颗粒沉降问题 研究 METHODS DYNAMICS PARTICLE DISSIPATIVE SEDIMENTATION 潜在优势 数值模拟 流动 数值计算方法 数学模型 验证 随机性 表现 颗粒运动 颗粒质量 影响 |
INVESTIGATION ON PARTICLE SEDIMENTATION USING DISSIPATIVE PARTICLE DYNAMICS METHODS |
| |
| KONG Yi-Hua,ZHANG Chu-Hua,XI Guang,WANG Chao.INVESTIGATION ON PARTICLE SEDIMENTATION USING DISSIPATIVE PARTICLE DYNAMICS METHODS[J].Journal of Engineering Thermophysics,2008,29(1). |
| |
| Authors: | KONG Yi-Hua ZHANG Chu-Hua XI Guang WANG Chao |
| |
| Abstract: | Mathematical and numerical models for the dissipative particle dynamics were introduced, including the governing equations for the motions of fluid particles, boundary conditions and numerical methods. The codes were programmed to simulate the particle sedimentation under the force of gravity. The effects of the particle's mass and gravity force on the particle's movement trace were revealed. The results show that, the less the mass and gravity force are, the stronger the randomness of particle's movement is. The adopted mathematical model and calculation algorithm were validated. This shows the feasibility and potential predominance of the method proposed in the paper for the numerical simulation of complex fluid flow. |
| |
| Keywords: | mesoscopic model dissipative particle dynamics particle sedimentation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
