14-17 May 2018
New Orleans
US/Central timezone

Numerical simulation of wicking in porous media

14 May 2018, 11:36
15m
New Orleans

New Orleans

Oral 20 Minutes MS 4.14: Wicking of Liquids in Porous Materials Parallel 1-F

Speaker

Mr Dawid Zimnik

Description

Phase separation and the vapor free delivery of liquids is a challenge in a compensated gravity environment. Porous materials are used for liquid and vapor phase separation. They enable the transport (wicking) of liquid and provide a barrier against penetrating gas (bubble point). The wicking process is the imbibition of liquid into porous structures due to capillary forces [1].
To predict the liquid behavior inside porous materials, numerical simulations on the macroscopic level can be performed. The macroscopic parameters – porosity, pore radius and permeability - have to be known to perform macroscopic simulations. For this purpose, a real sample was scanned using X-ray tomography and a 3D model was reconstructed from it. CFD simulations were performed on the pore level using a 3D model and an appropriate representative volume element (REV) to determine the macroscopic parameters.

References

Y. Grebenyuk and M. E. Dreyer. Wicking of liquid nitrogen into superheated porous structures. Cryogenics, 78:27-39, September 2016.

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