caa a22 4500 463163648 CHVBK 20180406164755.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s11242-006-0005-0 doi (NATIONALLICENCE)springer-10.1007/s11242-006-0005-0 The Local Geometry of Gas Injection into Saturated Homogeneous Porous Media [Elektronische Daten] [John Selker, Michael Niemet, Norton Mcduffie, Steven Gorelick, Jean-Yves Parlange] The injection of gases into liquid saturated porous media is of theoretical and practical interest (e.g., air sparging for the removal of volatile organic compounds from contaminated aquifer sediments). The influence of the rate of gas delivery and the vertical distance from the source are developed. The concept of a "near-injection region” is presented in which the pressure gradients exceed buoyant gradients and thus exhibits largely radial flow. The near-injection size is shown to have an area required to carry the injected gas flow under unit gradient. The parabolic movement of gas outside of this area which has often been observed is explained as reflecting the sum of many realizations of gas channels following random lateral movements as they precede upward independent of flux. These concepts are confirmed through comparison with published and experimental data of air injection into slabs consisting of saturated sands of a range of textures. Springer, 2006 gas flow nationallicence gas sparging nationallicence fingered flow nationallicence bouyant flow nationallicence capillary number nationallicence bond number nationallicence Selker John Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR, USA aut Niemet Michael CH2M HILL, Corvallis, OR, USA aut Mcduffie Norton Consultant, Corvallis, OR, USA aut Gorelick Steven Department of Geological and Environmental Sciences, Stanford University, Stanford, CA, USA aut Parlange Jean-Yves Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA aut Transport in Porous Media Kluwer Academic Publishers 68/1(2007-05-01), 107-127 0169-3913 68:1<107 2007 68 11242 https://doi.org/10.1007/s11242-006-0005-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11242-006-0005-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Selker John Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR, USA aut NATIONALLICENCE 700 1- Niemet Michael CH2M HILL, Corvallis, OR, USA aut NATIONALLICENCE 700 1- Mcduffie Norton Consultant, Corvallis, OR, USA aut NATIONALLICENCE 700 1- Gorelick Steven Department of Geological and Environmental Sciences, Stanford University, Stanford, CA, USA aut NATIONALLICENCE 700 1- Parlange Jean-Yves Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, USA aut NATIONALLICENCE 773 0- Transport in Porous Media Kluwer Academic Publishers 68/1(2007-05-01), 107-127 0169-3913 68:1<107 2007 68 11242 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer