{"id":82,"date":"2019-11-27T15:22:35","date_gmt":"2019-11-27T15:22:35","guid":{"rendered":"http:\/\/aquifer.geology.buffalo.edu\/?p=82"},"modified":"2019-11-28T02:59:59","modified_gmt":"2019-11-28T02:59:59","slug":"darcy-columns","status":"publish","type":"post","link":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/2019\/11\/27\/darcy-columns\/","title":{"rendered":"Darcy Columns"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcy_columns-1024x1024.jpg\" alt=\"\" class=\"wp-image-156\" srcset=\"https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcy_columns-1024x1024.jpg 1024w, https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcy_columns-150x150.jpg 150w, https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcy_columns-300x300.jpg 300w, https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcy_columns-768x768.jpg 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p>Objectives: To explore the relationship between discharge\n(Q), specific discharge (q), and average linear velocity (v) in homogenous\naquifers. <\/p>\n\n\n\n<p>1. The following problem is based on water flow through two\nDarcy columns.&nbsp; The first column is\nfilled with a gravel that has a hydraulic conductivity of 10<sup>1<\/sup>\ncm\/sec, and the second is filled with silty sand with a hydraulic conductivity\nof 10<sup>-3<\/sup> cm\/sec.&nbsp; The\nequipotential lines are shown on the top of the models represented as dashed\nlines with their associated hydraulic heads.&nbsp;\nNote that each column has a different distribution of equipotential\nlines. The total length of the columns are 45 cm and a scale bare is shown\nlower right corner of the back panel of the model.&nbsp; Using these models please answer the\nfollowing questions. <\/p>\n\n\n\n<p>A. Based on the two Darcy\u2019s columns provided quantify the\ndifference in groundwater discharge [cm<sup>3<\/sup>\/sec] between the Gravel\ncolumn and the Silty Sand column.&nbsp; <\/p>\n\n\n\n<p>B.&nbsp; Assuming the\ngravel column has an effective porosity of 0.30 and the silty sand column has\nan effective porosity of 0.25.&nbsp; Determine\nwhich column has a higher average linear velocity and by how much.&nbsp; <\/p>\n\n\n\n<p>C.&nbsp; Explain which of\nthe following column would make a better aquifer.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"542\" height=\"704\" src=\"http:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcys_Law_Columns.png\" alt=\"\" class=\"wp-image-138\" srcset=\"https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcys_Law_Columns.png 542w, https:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcys_Law_Columns-231x300.png 231w\" sizes=\"auto, (max-width: 542px) 100vw, 542px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-file\"><a href=\"http:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcys_Law_Columns.pdf\">Foldable Aquifer Model<\/a><a href=\"http:\/\/aquifer.geology.buffalo.edu\/wp-content\/uploads\/2019\/11\/Darcys_Law_Columns.pdf\" class=\"wp-block-file__button\" download>Download<\/a><\/div>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/\"><img decoding=\"async\" src=\"https:\/\/i.creativecommons.org\/l\/by-nc\/4.0\/88x31.png\" alt=\"Creative Commons License\"\/><\/a><\/figure>\n\n\n\n<p><br>This work is licensed under a <a href=\"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/\">Creative Commons Attribution-NonCommercial 4.0 International License<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Objectives: To explore the relationship between discharge (Q), specific discharge (q), and average linear velocity (v) in homogenous aquifers. 1. The following problem is based on water flow through two Darcy columns.&nbsp; The first column is filled with a gravel that has a hydraulic conductivity of 101 cm\/sec, and the second is filled with silty &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/aquifer.geology.buffalo.edu\/index.php\/2019\/11\/27\/darcy-columns\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Darcy Columns&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-82","post","type-post","status-publish","format-standard","hentry","category-darcys-law"],"_links":{"self":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/82","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/comments?post=82"}],"version-history":[{"count":5,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions"}],"predecessor-version":[{"id":283,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/posts\/82\/revisions\/283"}],"wp:attachment":[{"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/media?parent=82"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/categories?post=82"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aquifer.geology.buffalo.edu\/index.php\/wp-json\/wp\/v2\/tags?post=82"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}