| 非定常Hele-Shaw流中Darcy定理的实验研究 |
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| 引用本文： | 孙建红,许金造.非定常Hele-Shaw流中Darcy定理的实验研究[J].南京航空航天大学学报(英文版),2003,20(2):134-139. |
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| 作者姓名： | 孙建红 许金造 |
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| 作者单位： | 1. 南京航空航天大学人机与环境工程系,南京,210016,中国
2. 香港科技大学机械工程系,中国香港 |
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| 摘 要： | 对表面水波在H—S槽中的传播进行了实验研究和理论分析．通过对水波的复波数的测量验证Darcy定理在非定常H—S流中的适用性。研究表明，水面波在H—S槽中的传播．具有较强的衰减现象。同时．其复波数的实部与Darcy理论预测吻合．而其虚部与理论预测相差甚远。表明在非定常情况下，Darcy定理有局限性，有必要进一步研究。
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| 关 键 词： | 非定常Hele—Shaw流 Darcy定理 实验研究 复波数 衰减现象 表面水波 传播 |
EXPERIMENTAL STUDY ON DARCY′S LAW IN HELE-SHAW CELLS |
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| SUN Jian-hong,HSU Chin-tsau.EXPERIMENTAL STUDY ON DARCY′S LAW IN HELE-SHAW CELLS[J].Transactions of Nanjing University of Aeronautics & Astronautics,2003,20(2):134-139. |
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| Authors: | SUN Jian-hong HSU Chin-tsau |
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| Abstract: | The basic physics of unsteady Hele-Shaw flow at high Reynolds numbers is mainly studied by an experimental measurement. In order to confirm the Darcy′s law in Hele-Shaw cell, since there is an analogy between flow in cells and that in porous media, progressive water waves are utilized to build an unsteady flow in a Hele-Shaw cell, and which complex wave number is measured by a wave height gauge. Meanwhile, theoretical analyses are used to compare with experimental data. Result shows Darcy′s Law is not exactly correct for unsteady Hele-Shaw flows, and it is expected to conduct a modified Darcy′s Law. |
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| Keywords: | Hele-Shaw cell surface water wave |
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