李天浩2006-07-252018-07-092006-07-252018-07-092003http://ntur.lib.ntu.edu.tw//handle/246246/2798本研究使用「孔頸網絡模型」(pore-throat network model)模擬孔隙介質中的 二相流特徵曲線，得到合理的模擬結果，證實「孔頸網絡模型」可以模擬磁滯現 象、估計非濕潤相殘餘量、以及表現殘留非濕潤相和接觸角的差異對於傳導係數 的影響等優點。但是研究中同時也發現兩個未預期的問題存在，一是「孔頸網絡 模型」有尺度效應的問題，應用「均壓法」操作可減小尺度效應的影響，但是無 法完全消弭網絡中流體分佈不均勻的現象；二是在逆向反演孔頸網絡參數的研究 上遇到計算量大、演算時間冗長的困難。解決以上問題的方法，必須改進孔頸模 型結構型態，以「單元孔頸系集模型」(unit-pore-throat assemble model)取代原先 的「頸網絡模型」。有關系集模型的研究尚在進行中，完整的研究成果將於期末報告中提出。The pore-throat network model is app- lied to simulate pc -s-k characteristic curves of two-phase flow in porous medium. The results demonstrate the model’s ability to reasonably mimic the hysteresis phenomena, quantitatively estimate the non-wetting phase residuals after imbibition, and imitate the effect of residual non-wetting phase and contact angle on conductivity. However, there are two problems raised during the research. One is the size effect of the network model caused by the trend in saturation related to the distance from the boundary. The other is the amount of computation is formidable. The network model is evolved to a new direction called the “ensemble model of unit pore-throats”. Preliminary study results were encouraging. For the new model is free of size effect and the computation time requirement is manageable. It will be presented and discussed in the final report.application/pdf498462 bytesapplication/pdfzh-TW國立臺灣大學土木工程學系暨研究所孔隙介質非水相性液體二相流擬靜態特徵曲線磁滯現象非濕潤相殘餘量孔頸網絡模型置換機制逆向問題Porous mediumnon-aqueous phase liquid (NAPL)two phase flowquasi-staticcharacteristic curveshysteresisnon-wetting phase residualspore-throat networkdisplacement mechanisminverse problemreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/2798/1/912211E002042.pdf