Development of a large scale model of discrete element method
离散元法大型模型的开发
基本信息
- 批准号:22760579
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Discrete Element Method(DEM) is widely used to figure out the complicated phenomena related to solid particle behavior. On the other hand, the DEM could not be applied to large scale systems because of the excessive calculation cost. In fact, the number of the calculated particles became a few hundred thousand by using a latest PC. Namely, the DEM could not be applied to industrial systems, where over billion particles were dealt with. Accordingly, development of a large-scale model of the DEM is desired now. To solve this problem, we have developed a coarse grain model of the DEM, where large-sized modeled particle represents a group of original particles. The coarse grain model was applied to typical gas-solid and solid-liquid flows. In the past studies, adequacy of the coarse grain model was shown by numerical examples. Validation of the coarse grain model was required for the practical usage. In the present study, we show the adequacy of the coarse grain model by the validation tests.
离散元法(DEM)被广泛用于计算固体颗粒行为的复杂现象。另一方面,由于计算成本过高,DEM无法应用于大型系统。事实上,通过使用最新的个人电脑,计算出的粒子数量达到了几十万。也就是说,DEM不能应用于处理超过十亿粒子的工业系统。因此,现在需要开发DEM的大尺度模型。为了解决这个问题,我们开发了DEM的粗粒模型,其中大尺寸的模型颗粒代表一组原始颗粒。将粗粒模型应用于典型的气固和固液流动。在以往的研究中,通过数值算例证明了粗粮模型的充分性。为了实际应用,需要对粗粮模型进行验证。在本研究中,我们通过验证试验证明了粗粮模型的充分性。
项目成果
期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
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SAKAI Mikio其他文献
Development of Fundamental Technologies on Computational Granular Dynamics towards Construction of a Digital Twin for Powder Compaction Process
计算颗粒动力学基础技术的发展,以构建粉末压实过程的数字孪生
- DOI:
10.2497/jjspm.69.490 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
Li Shuo;Duan Guangtao;Sakai Mikio;SAKAI Mikio - 通讯作者:
SAKAI Mikio
SAKAI Mikio的其他文献
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{{ truncateString('SAKAI Mikio', 18)}}的其他基金
Rheological evaluation of highly viscous slurry by using a numerical computation
利用数值计算评估高粘度浆料的流变性
- 批准号:
25630428 - 财政年份:2013
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
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