| 堆积粉尘本构方程的实验测试 |
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| 引用本文： | 范宝春,雷勇,赵振平.堆积粉尘本构方程的实验测试[J].实验流体力学,2002,16(1):33-35. |
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| 作者姓名： | 范宝春 雷勇 赵振平 |
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| 作者单位： | 南京理工大学动力学院,江苏,南京,210094 |
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| 基金项目： | 国家自然科学基金资助项目 (No 1 9772 0 1 8) |
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| 摘 要： | 确定堆积粉尘的本构方程对讨论有关现象是十分重要的。设计了一种测试方法 ,利用阴影摄影和带示踪粒子的X光脉冲摄影 ,记录激波与堆积粉尘相互作用的流场 ,再通过对该流场的理论分析 ,以确定堆积粉尘的本构方程。以超细淀粉为例 ,对所测的方程做了实验验证。
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| 关 键 词： | 本构方程 堆积粉尘 激波 实验测试 |
| 文章编号： | 1007-3124(2002)01-0033-03 |
| 修稿时间： | 2001年3月27日 |
Measurement on constitutive equation of granular materials |
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| FAN Bao chun,LEI Yong,ZHAO Zhen ping.Measurement on constitutive equation of granular materials[J].Experiments and Measur in Fluid Mechanics,2002,16(1):33-35. |
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| Authors: | FAN Bao chun LEI Yong ZHAO Zhen ping |
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| Abstract: | The constitutive equations of materials are important to discuss variant phenomena occurring in it. A special method of measurement on constitutive equations of granular materials were developed in this paper. The flow fields both in gas and granular bed induced by interactions of shock waves and a surface of granular material were recorded by means of shadow graphs and pulsed X ray shadow graphs with the trace particles respectively. The constants in the constitutive equation of granular material can be determined according to the experimental results and analytical formulas based on shock polars. As a sample,the constitutive equation of a loose starch particle bulk was measured and was verified by comparisons between measured and calculated results. |
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| Keywords: | constitutive equation granular materials shock wave experimental measurement |
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