Difference between revisions of "Hauptseminar Porous Media SS 2021/Transport in porous networks"
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number=8  number=8  
topic=Transport in porous networks  topic=Transport in porous networks  
−  speaker=  +  speaker= Stefan Orth 
−  date=  +  date=20210625 
−  time=  +  time=14:30 
tutor=[[Philipp Stärk]]  tutor=[[Philipp Stärk]]  
handout=  handout=  
Line 10:  Line 10:  
== Contents ==  == Contents ==  
+  Understanding transport of fluids in porous networks is directly useful to a large array of technical applications, including mining, oil recovery, battery design, catalysis design etc.  
−  +  Obviously, transport of fluids in porous networks depends on the exact hydrodynamic conditions inside the material, which can be characterized via various dimensionless numbers (Reynolds, Peclet, Knudsen, Mach).  
+  
+  In this talk the theory of transport will be described, first by considering [https://en.wikipedia.org/wiki/Hagen%E2%80%93Poiseuille_equation PoiseuilleHagen flow] and then extending this model to more complex pore geometries in [https://en.wikipedia.org/wiki/Darcy%27s_law Darcy's law], while discussing limitations and corrections of all considered model assumptions.  
+  In particular, the talk will also deal with the interesting phenomenon of [https://en.wikipedia.org/wiki/Imbibition liquid imbibition], to consider the effects of adsorption and confinement.  
+  
+  In a second part of the talk, pore network models will be considered, where transport properties can be determined on a simple, coarse grained model of porous medium by using conservation equations, akin to the wellknown [https://en.wikipedia.org/wiki/Kirchhoff%27s_circuit_laws Kirchhoff laws] in electrical engineering.  
== Literature ==  == Literature ==  
−  +  <bibentry>  
+  barrat99a  
+  tsunazawa16a  
+  bear18a  
+  obliger14a  
+  </bibentry> 
Latest revision as of 09:49, 4 March 2021
 Date
 20210625
 Time
 14:30
 Topic
 Transport in porous networks
 Speaker
 Stefan Orth
 Tutor
 Philipp Stärk
Contents
Understanding transport of fluids in porous networks is directly useful to a large array of technical applications, including mining, oil recovery, battery design, catalysis design etc.
Obviously, transport of fluids in porous networks depends on the exact hydrodynamic conditions inside the material, which can be characterized via various dimensionless numbers (Reynolds, Peclet, Knudsen, Mach).
In this talk the theory of transport will be described, first by considering PoiseuilleHagen flow and then extending this model to more complex pore geometries in Darcy's law, while discussing limitations and corrections of all considered model assumptions. In particular, the talk will also deal with the interesting phenomenon of liquid imbibition, to consider the effects of adsorption and confinement.
In a second part of the talk, pore network models will be considered, where transport properties can be determined on a simple, coarse grained model of porous medium by using conservation equations, akin to the wellknown Kirchhoff laws in electrical engineering.
Literature

JeanLouis Barrat, Lydéric Bocquet.
Large Slip Effect at a Nonwetting FluidSolid Interface.
Physical Review Letters 82(23):4671–4674, 1999.
[DOI] 
Yuya Tsunazawa, Tadashi Yokoyama, Naoki Nishiyama.
An Experimental Study on the Rate and Mechanism of Capillary Rise in Sandstone.
Progress in Earth and Planetary Science 3(1):8, 2016.
[DOI] 
Jacob Bear.
Modeling Phenomena of Flow and Transport in Porous Media.
Edited by Jacob Bear. Part of Theory and Applications of Transport in Porous Media.
Springer International Publishing, Cham, 2018. ISBN: 9783319728261.
[DOI] 
Amaël Obliger, Marie Jardat, Daniel Coelho, Samir Bekri, Benjamin Rotenberg.
Pore network model of electrokinetic transport through charged porous media.
Physical Review E 89(4):043013, 2014.
[PDF] (2.1 MB) [DOI]