| X射线成像辅助多孔介质内渗流烘干仿真实验 |
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| 引用本文： | 夏泳,叶慧群,许友生,宋付权. X射线成像辅助多孔介质内渗流烘干仿真实验[J]. 辽宁工程技术大学学报(自然科学版), 2009, 0(Z1) |
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| 作者姓名： | 夏泳 叶慧群 许友生 宋付权 |
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| 作者单位： | 浙江师范大学数理与信息工程学院;香港理工大学力学与机械工程系; |
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| 基金项目： | 国家自然科学基金资助项目(1057213); 国家973前沿专项基金资助项目(2006CB708612); 香港特区政府研究基金资助项目(PolyU5172/02) |
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| 摘 要： | 为了提高烘干速率,利用X射线成像实验研究气体喷注时液体在多孔介质内的渗流干燥过程。结果表明液体渗透和干燥速度是由粘滞压降、气体渗透的状态及多孔介质的毛细管特性决定的。注入完全饱和的气体时,干燥只会引起气体膨胀。毛细作用从高浸透的区域到低浸透的区域,导致更多的一致的曲线形状。注入干燥气体时,干燥器放在进口,扩散器穿过多孔介质。实验结果与一个来自连续性模型的数字结果相比较。这个模型对砂岩有一个好的结果,但相对于石灰石的实验不是很满意。
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| 关 键 词： | 多孔介质 烘干 注气 |
Water removal from porous media by gas injection with X digital imaging |
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| XIA Yong ,YE Huiqun,XU Yousheng,SONG Fuquan. Water removal from porous media by gas injection with X digital imaging[J]. Journal of Liaoning Technical University (Natural Science Edition), 2009, 0(Z1) |
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| Authors: | XIA Yong YE Huiqun XU Yousheng SONG Fuquan |
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| Affiliation: | XIA Yong 1,2,YE Huiqun1,XU Yousheng1,SONG Fuquan1(1.Department of Physics,Zhejiang Normal University,Jinhua 321004,China,2.Department of Mechanical Engineering,The Hong Kong Polytechnic University,Kowloon,Hongkong,China) |
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| Abstract: | In order to improve drying rate,X-ray imaging experiments were performed to study the flow-through drying of water-saturated porous media during gas injection.The results show that the liquid saturation profile and the rate of drying are dependent on the viscous pressure drop,the state of saturation of the gas and the capillary characteristics of the porous medium.During the injection of a completely saturated gas,drying occurs only due to gas expansion.Capillary-driven flows from regions of high saturation... |
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| Keywords: | porous media drying gas injection |
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