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A1 A2 A3

A4

 

B1 B3 B4

B5 B6 B7

B8 B9

 

C1 C3 C4

C6 C7

 

D2 D3 D5

D6 D7 D8

 

T1

 

Z1 Z2 Z3

Z4 MGK

Project A4


completed in 2010

Multiphase flow simulations coupled to NMR and SIP signatures in reconstructed natural porous media using Lattice Boltzmann methods

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Research Area:
Computational Fluid Dynamics, Lattice Boltzmann simulation, Geophysics, HPC


project a4

The goal of the project is the development of a numerical tool for the simulation of nuclear magnetic resonance (NMR) and spectral-induced polarization (SIP) responses in partially saturated soils. Such a tool can be used to gain further insight into the interpretation of NMR and SIP signal measurements in field experiments regarding the properties of the involved soils. The tool is based on an existing CFD software for solving multiphase phenomena in porous media, which is based on kinetic methods. The results of imbibition/drainage simulations from that software are used to provide an initial partially saturated state for subsequent NMR/SIP simulations. The software is extended by suitable numerical methods for the simulation of NMR/SIP responses, by measuring NMR responses in both the wetting/non-wetting phase synchronously, by advancing the numerical modeling of the boundaries and by computing magnetic field gradients during the initialization process.

For the numerical representation of the geometry of the porous medium, a voxel set is generated from data of tomographic scans, from which subsequently a Cartesian grid with sub-grid-corrections is derived.

In order to enable members of A1 and A2 to perform self-contained numerical studies, the software prototype is improved in terms of usability, including plausibility checks for input parameters, the user frontend, and the parallelization of the preprocessing steps.


Cooperation partner:
n/a

4 Member(s):

Benjamin Ahrenholz

Dr.-Ing.
Benjamin Ahrenholz
Principal Investigator
in A4

TU Braunschweig
Institute for computational modeling
in civil engineering

Mühlenpfordtstr. 4-5
38106 Braunschweig
Germany

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+49 (0)531 391 7584
+49 (0)531 391 7518
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ahrenholz@irmb.tu-bs.de

 

 

Manfred Krafczyk

Prof. Dr.
Manfred Krafczyk
Principal Investigator
in A4

TU Braunschweig
Institute for computational modeling
in civil engineering

Mühlenpfordtstr. 4-5
38106 Braunschweig
Germany

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+49 (0)531 391 7590
+49 (0)531 391 7599
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kraft@irmb.tu-bs.de

 

 

Maik Stiebler

Maik Stiebler
Scientist
in A4

TU Braunschweig
Institute for computational modeling
in civil engineering

Mühlenpfordtstr. 4-5
38106 Braunschweig
Germany

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+49 (0)531 391 7531
+49 (0)531 391 7518
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stiebler@irmb.tu-bs.de

 

 

Anna Wedler

Anna Wedler
Administrative Secretary
in A4

TU Braunschweig
Institute for computational modeling
in civil engineering

Mühlenpfordtstraße 4 - 5
38106 Braunschweig
Germany

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+49 (0)531 391 7512
+49 (0)531 391 7518
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a.wedler@tu-bs.de

 

 


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