Zobrazeno 1 - 10 of 37 pro vyhledávání: '"Helmut Geistlinger"'
1
Akademický článek
The Interplay Between Pore‐Scale Heterogeneity, Surface Roughness, and Wettability Controls Trapping in Two‐Phase Fluid Displacement in Porous Media
Autor: Helmut Geistlinger, Saeed Golmohammadi, Bilal Zulfiqar, Steffen Schlueter, Enrico Segre, Ran Holtzman
Publikováno v: Geophysical Research Letters, Vol 51, Iss 1, Pp n/a-n/a (2024)
Abstract Predicting the compactness of the invasion front and the amount of trapped fluid left behind is of crucial importance to applications ranging from microfluidics and fuel cells to subsurface storage of carbon and hydrogen. We examine the inte
Externí odkaz: https://doaj.org/article/169124ec54be43558a93bb6ff67c67d8
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2
Akademický článek
Simulation of Channelized Gas Flow Pattern in Heterogeneous Porous Media: A Feasibility Study of Continuum Simulation at Bench Scale
Autor: Shirin Samani, Helmut Geistlinger
Publikováno v: Vadose Zone Journal, Vol 18, Iss 1 (2019)
In remediation technologies, air or O gas is injected into a polluted aquifer to remove organic contaminants. A gas injection process is also applied in enhanced oil recovery and CO sequestration. The wide range of gas injection processes into porous
Externí odkaz: https://doaj.org/article/6803427af0ed4938a26f5ebd7216c16a
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3
Akademický článek
Evaporation Study for Real Soils Based on HYPROP Hydraulic Functions and Micro-CT-Measured Pore-Size Distribution
Autor: Helmut Geistlinger, Frederic Leuther
Publikováno v: Vadose Zone Journal, Vol 17, Iss 1 (2018)
Evaporation—a key process for water exchange between soil and atmosphere—is controlled by convective and diffusive surface fluxes that determine the functional time dependence of the evaporation rate (). Recent studies demonstrated that only a po
Externí odkaz: https://doaj.org/article/d96918dc18ff4670b78db4c5e0b1c4a0
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4
Akademický článek
Membrane Based Measurement Technology for in situ Monitoring of Gases in Soil
Autor: Helmut Geistlinger, Jens Hagenau, Martin Leuthold, Sebastian Ebert, Detlef Lazik
Publikováno v: Sensors, Vol 9, Iss 2, Pp 756-767 (2009)
The representative measurement of gas concentration and fluxes in heterogeneous soils is one of the current challenges when analyzing the interactions of biogeochemical processes in soils and global change. Furthermore, recent research projects on CO
Externí odkaz: https://doaj.org/article/2ab47985d9c740e0b3d266e1d0056b70
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6
The Impact of Wettability and Surface Roughness on Fluid Displacement and Capillary Trapping in 2‐D and 3‐D Porous Media: 1. Wettability‐Controlled Phase Transition of Trapping Efficiency in Glass Beads Packs
Autor: Bilal Zulfiqar, Helmut Geistlinger
Publikováno v: Water Resources Research. 56
Fluid invasion, displacement of one fluid by another in porous media, is important in a large number of industrial and natural processes. Of special interest is the trapping of gas and oil clusters. We study the impact of wettability on fluid pattern
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a61dfeb1d307b3fb65bf4184ac27cd4c
https://doi.org/10.1029/2019wr026826
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9
The Impact of Corner- and Thick-Film flow on Evaporation: A Micromodel Study
Autor: Helmut Geistlinger, Yi Ding
Evaporation from real soils is a rather complex process, where atmospheric processes and internal water-transport and phase-transfer processes interfere each other, often nonlinearly. Coupled surface flow and diffusion from interfering neighboring po
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab72845038dc04b19209918ed8c63205
https://doi.org/10.5194/egusphere-egu2020-2058
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