台灣留學生出席國際會議補助

2007年6月19日 星期二

Transport of colloids in porous medium.

論文發表人:林香谷 (加州大學河濱分校物理天文所博士班)

 

http://www.aps.org/meetings/march/index.cfm

 

地下水存在著許多微生物,例如細菌或者是病毒,這些生存於在地下水中的微生物,每年在美國都造成了數百萬的疾病。然而至今,關於這些微生物如何藉著地下在土壤裡傳播還沒完全被了解。在本篇報告中,我們提出了一個新的模型嘗試去解釋這樣的運動並且得到很好的結果。

 

Pathogenic microorganisms such as bacteria and viruses in groundwater cause over one million illnesses per year in the United States. Despite the considerable research, the transport of microorganisms (colloids) in porous media is not well understood. In the reported work, we present a phenomenological filtration model that describes transport of colloids and the dynamics of colloid deposition and release at the attachment sites. The model has a soliton-like solution for the filtering front separating "clean" anterior and "dirty" posterior regions. The computed breakthrough curves and time-dependent deposition curves are in good agreement with experimental measurements.

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