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Numerical study of the effect of vitreous support on eye accomodation

Ljublimova D., Eriksson A., Bauer S.

Acta of Bioengineering and Biomechanics

2005

Vol. 7, nr 2

1-14

The aim of the current work was to extend previously created finite element models of accommodation such as the one by BURD [2] by addition of vitreous. The zonule consisted of anterior and central sets and vitreous was modelled as a linear elastic incompressible body. An inverse method was used to find some important, previously not documented, aspects. The model was found to behave according to the expectations, with results consistent with classical Helmholtz theory.

Modelling of karst genesis at the catchment scale - influence of spatially variable hydraulic conductivity

Bauer S., Liedl R., Sauter M.

Acta Geologica Polonica

2002

Vol. 52, nr 1

13-21

The aim of this work is to study the genesis of karst aquifers at the catchment scale. Especially the influence of different boundary conditions and geological setting is investigated in several scenarios. A hybrid continuum-discrete flow model is used for the modelling of conduit development. Effects of heterogeneity in hydraulic conductivity and in fracture spacing are examined in four scenarios. For homogeneous conditions a shallow water-table cave develops. If an area of reduced hydraulic conductivity is introduced, the conduit system evolves around this area and a deep phreatic cave is formed. This is true only, if the contrast in hydraulic conductivity is large enough. If an area of higher fracture density is introduced, this area is more intensely karstified, and a local system of deep karstification develops.