請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/28673
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林俊男 | |
dc.contributor.author | Yuan-Yao Chang | en |
dc.contributor.author | 張元耀 | zh_TW |
dc.date.accessioned | 2021-06-13T00:16:45Z | - |
dc.date.available | 2008-07-31 | |
dc.date.copyright | 2007-07-31 | |
dc.date.issued | 2007 | |
dc.date.submitted | 2007-07-25 | |
dc.identifier.citation | 參考文獻
岑況、於崇文,成礦流體的流動、反應、輸送耦合與金屬成礦,地學前緣,第8卷,第4期,北京,2001,第323-328頁。 Bear, J., Dynamics of Fluid in Porous Media, Amsterdam: Elsevier, 1972, pp. 764. Chadam, J., and P. Ortoleva, Morphological instabilities in physico- chemical systems, Earth-Sci. Rev., vol. 29, 1990, pp. 175-181. Chadam, J., D. Hoff, E. Merino, P. Ortoleva, and A. Sen, Reactive infiltration instabilities, IMA J. Appl. Math., vol. 36, no. 3, 1986, pp. 207-221. Chen, J. S., and C. W. Liu, Interaction of reactive fronts during transport in a homogeneous porous medium with initial small non-uniformity, J. Contam. Hydrol., vol. 72, 2004, pp. 47-66. Chen, J. S., and C. W. Liu, Numerical simulation of the evolution of aquifer porosity and species concentrations during reactive transport, Comput. Geosci., vol. 28, 2002, pp. 485-499. Chen, W., and P. Ortoleva, Reaction front fingering in carbonate-cemented sandstones, Earth-Sci. Rev., vol. 29, 1990, pp. 183- 198. Clement, T. P., RT3D: A Modular Computer Code for Simulating Reactive Multi-species Transport in 3-Dimensional Groundwater Systems, PNNL-SA-11720. Pacific Northwest National Laboratory., Richland, Washington, 1997. Daccord, G., O. Liétard, and R. Lenormand, Chemical dissolution of a porous medium by a reactive fluid: II. Convection vs. reaction, behavior diagram, Chem. Eng. Sci., vol. 48, no. 1, 1993, pp. 179-186. Emmanuel, S., and B. Berkowitz, Mixing-induced precipitation and porosity evolution in porous media, Adv. Water Resour., vol. 28, 2005, pp. 337-344. Fredd, C. N., and H. Scott Fogler, Influence of transport and reaction on wormhole formation in porous media, AICHE J., vol. 44, 1998, pp. 1933-1949. Harbaugh, A.W., and M. G. McDonald, Progrommer documentation for MODFLOW-96, an update to the U.S. Geological Survey modular finite-difference groundwater flow model. USGS Open-File Report. 1996, pp. 96-486. Lasaga, A. C., Kinetic Theory in the Earth Sciences, New Jersey: Princeton University Press, 1998. Lerman, A., Geochemical Processes, New York: Wiley, 1979, pp. 481. Li, L., C. H. Benson, and E. M. Lawson, Modeling porosity reductions caused by mineral fouling in continuous-wall permeable reactive barriers, J. Contam. Hydrol., vol. 83, 2006, pp. 89-121. Liu, X., A. Ormond, K. Bartko, Y. Li, and P. Ortoleva, A geochemical reaction-transport simulator for matrix acidizing analysis and design, J. Pet. Sci. Eng., vol. 17, 1997, pp. 181-196. Ortoleva, P., E. Merino, C. Moor, and J. Chadam, Geochemical self-organization I: reaction-transport feedbacks and modelling approach. Am. J. Sci., vol. 287, 1987a, pp. 979-1007. Ortoleva, P., J. Chadam, E. Merino, and A. Sen, Geochemical self-organization II: The reactive-infiltration instability. Am. J. Sci., vol. 287, 1987b, pp. 1008-1040. Ortoleva, P. J., Geochemical Self-Organization, Oxford: Clarendon Press, 1994, pp. 3. Renard, F., J. P. Gratier, P. Ortoleva, E. Brosse, and B. Bazin, Self- organization during reactive fluid flow in a porous medium, Geophys. Res. Lett., vol. 25, no. 3, 1998, pp. 385-388. Singurindy, O., and B. Berkowitz, The role of fractures on coupled dissolution and precipitation patterns in carbonate rocks, Adv. Water Resour., vol. 28, 2005, pp. 507-521. Xu, T., and K. Pruess, Coupled modeling of non-isothermal multiphase flow, solute transport and reactive chemistry in porous and fractured media: 1. Model development and validation. Rep. LBNL-42050. Lawrence Berkeley Natl. Lab., Berkeley, CA., 1998. Xu, T., and K. Pruess, Modeling multiphase non-isothermal fluid flow and reactive geochemical transport in variably saturated fractured rocks: 1. Methodology, Am. J. Sci., vol. 301, no. 1, 2001, pp. 16-33. Zhong, S., and A. Mucci, Calcite precipitation in seawater using a constant addition technique: a new overall reaction kinetic expression, Geochim. Cosmochim. Acta, vol. 57, 1993, pp. 1409-1417. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/28673 | - |
dc.description.abstract | 地下水與流經之孔隙介質將產生各種不同化學反應,使固相部份之孔隙介質溶解或沉澱,進而改變孔隙率,同時,水中溶質濃度亦隨之增減,且孔隙率之改變亦影響地下水流場,因而形成一複雜交互作用之系統。目前常用於模擬地下水流之模式鮮少考慮孔隙率改變之影響, 即地下水流況不受反應作用影響。本研究之目的為探討影響地下水-孔隙介質間動力溶解反應與地下水流況之重要因子,將以數值方法分析地下水系統受不同上游壓力梯度、反應速率常數、初始雙擾動擾動間距與強度等因子影響下,其孔隙率與水中溶質濃度隨時間與空間變化之歷程,並將結果繪製成波鋒行為圖,藉以探討各重要因子之影響機制。
模擬結果指出上游壓力梯度較低時(<0.3),初始雙擾動皆發展為平波鋒。而上游壓力梯度>0.5時,初始雙擾動則會合併為單波鋒或發展成雙波鋒。隨著強度因子由0.2增加至1.0,初始雙擾動發展為雙波鋒之情況亦隨之增加。強度因子為1.0時,初始雙擾動最容易發展為雙波鋒。隨著強度因子由1.0增大至2.0,初始雙擾動合併為單波鋒之情況增加。此外,反應速率常數較小( 值為0.2或0.4)時,初始雙擾動容易發展為單波鋒。改變 值對波鋒延伸速度影響較大,整體之波鋒延伸速度隨 值增加而減少,而 值為0.4之波鋒延伸速度最慢。故不同強度因子與反應速率常數對於地下水中溶解傳輸交互作用有顯著之影響。 自然界中因溶解反應之岩/水交互作用,形成不同型態之複雜現象,可經由本研究考慮之上游壓力梯度、反應速率常數、初始雙擾動間距及強度等因子,在不同組合條件下重建其形成之歷程,並提供了部份定量分析上之解釋,有助於進一步解開造物者創造自然之神奇面紗。未來研究可考慮較高流速之地下水流況,並加入延散之效應。化學反應亦可考慮沉澱、吸附與脫附等反應,或考慮多溶質之傳輸與化學反應,擴大模式之應用範圍。孔隙率之改變機制可考慮微生物之作用,期能更接近真實現地之情況。 | zh_TW |
dc.description.abstract | When groundwater flows through porous media of subsurface, various water/rock reactions are developed, including dissolution and precipitation, and the porosity is also changed. Accordingly, the concentration in the groundwater may increase or decrease. The change of the porosity affects the groundwater flow field, resulting a feed-back complex system. However, the change of the porosity is not considered in most of numerical models of which are commonly used to simulate the groundwater flow and solute transport. The objective of this study is hence to evaluate the interaction of porosity and kinetic dissolution reaction on the evolution of groundwater flow and solute transport using the developed numerical model, NSPCRT. Four important factors, including upstream pressure gradient, reaction rate constant, initial two perturbations spacing and strength are comprehensively considered. According to the simulation results, front behavior diagram are plotted to illustrate the evolution of dissolution fronts under various conditions of these four factors.
Simulation results indicate that initial two perturbations develop to a planar front under low upstream pressure gradient (<0.3) and merge to a single front, or develop to a double front under high upstream pressure gradient greater (>0.5). Moreover, the tendency of initial two perturbations will develop to a double front as the strength factor increases from 0.2 to 1.0, and to a single front as the strength factor increases from 1.0 to 2.0. The optimum condition for developing a double front is the strength factor equal to 1.0. As the reaction rate constant is small ( is equal to 0.2 or 0.4), initial two perturbations likely merge to a single front. Changes of value significantly affect the front moving velocity. The front moving velocity decreases with increasing . The slowest front moving velocity occurred with =0.4. Based on these results, strength factor and reaction rate constant are considered as two important factors that govern the interaction of dissolution and solute transport in the groundwater system. In this study, the numerical model can reproduce the natural observed phenomenon of water/rock interaction with dissolution chemical reaction using a combination of various conditions of upstream pressure gradient, reaction rate constant, initial two perturbations spacing and strength. The result provides some quantitative clue to disclose the nature process formation of the Karst rock. Future study can consider high flow velocity condition, and includes the dispersion effect. In addition to precipitation chemical reaction, adsorption and desorption, or multiple-species reactive chemical transport can also be incorporated to the NSPCRT model. Moreover, the modeling of porosity change induced by microbial mediation is another active research area in the field of biogeochemistry which can be included in the future study. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T00:16:45Z (GMT). No. of bitstreams: 1 ntu-96-R94622023-1.pdf: 1215306 bytes, checksum: 090b078da398d1a6298fdc5af52878f9 (MD5) Previous issue date: 2007 | en |
dc.description.tableofcontents | 目錄
摘要 i Abstract ii 目錄 iv 表目錄 vii 圖目錄 ix 符號說明 xiii 第一章 前言 1 1.1 研究背景 1 1.2 研究目的 2 第二章 文獻回顧 3 2.1 模式模擬 3 2.2 水溶液與孔隙介質之反應-傳輸實驗 5 第三章 模式推導與求解 7 3.1 化學反應為動力溶解反應 7 3.1.1 孔隙介質化學反應 7 3.1.2 地下水流動 9 3.1.3 溶質傳輸 11 3.1.4 無因次化 13 3.2 化學反應包括溶解與沉澱反應15 3.2.1 孔隙介質化學反應 15 3.2.2 地下水流動 16 3.2.3 溶質傳輸 16 3.2.4 無因次化 17 3.3 模擬區域、邊界條件與初始條件 20 3.3.1 無因次壓力與無因次濃度之邊界條件 20 3.3.2 孔隙率、無因次濃度與無因次壓力之初始條件 21 3.4 方程式離散 22 第四章 數值模擬設定 26 4.1 邊界條件 26 4.1.1 壓力邊界條件 26 4.1.2 無因次濃度邊界條件 26 4.2 初始條件 27 4.3 模擬案例 31 4.3.1 案例I-不同強度因子 31 4.3.2 案例II-不同反應速率常數 31 4.3.3 案例III-強度因子SS 為1.0 與α 值為1.0 之細部模擬 31 第五章 模擬結果與討論 34 5.1 案例I-不同強度因子之模擬結果 34 5.2 案例II-不同反應速率常數之模擬結果 47 5.3 案例III-強度因子SS 為1.0 與α 值為1.0 之細部模擬結果 53 5.4 討論 55 5.4.1 波鋒之延伸與特性 55 5.4.2 不同強度因子之模擬結果討論 57 5.4.3 不同反應速率常數之模擬結果討論 60 5.4.4 強度因子SS 為1.0 與α 值為1.0 之細部模擬結果討論 64 第六章 結論與建議 70 6.1 結論 70 6.2 建議 70 參考文獻 72 附錄A 化學反應為動力溶解反應之耦合微分方程組離散化 74 附錄B 不同強度因子之模擬結果 81 附錄C 不同反應速率常數之模擬結果 92 附錄D 細部模擬之模擬結果 98 | |
dc.language.iso | zh-TW | |
dc.title | 孔隙率與化學反應之交互作用之溶質傳輸歷程 | zh_TW |
dc.title | Interaction of Porosity and Chemical Reaction on the Evolution of Solute Transport Processes | en |
dc.type | Thesis | |
dc.date.schoolyear | 95-2 | |
dc.description.degree | 碩士 | |
dc.contributor.coadvisor | 劉振宇 | |
dc.contributor.oralexamcommittee | 陳瑞昇,方文村 | |
dc.subject.keyword | 孔隙率,動力,溶解反應,強度,反應速率,常數,波鋒行,為圖, | zh_TW |
dc.subject.keyword | porosity,kinetic dissolution reaction,strength,reaction rate constant,front behavior diagram, | en |
dc.relation.page | 73 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2007-07-27 | |
dc.contributor.author-college | 生物資源暨農學院 | zh_TW |
dc.contributor.author-dept | 生物環境系統工程學研究所 | zh_TW |
顯示於系所單位: | 生物環境系統工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-96-1.pdf 目前未授權公開取用 | 1.19 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。