solidify

cohesion model easo/capillary/viscous/solidify

cohesion model washion/capillary/viscous/solidify

Purpose

A liquid bridge model that gets converted to solid bonds if a liquid content threshold is exceeded.

Syntax

cohesion liquidbridge/general/solidify [other model_type/model_name pairs as described here ] settings lb_keyword lb_values bond_keyword bond_values
cohesion easo/capillary/viscous/solidify [other model_type/model_name pairs as described here ] settings lb_keyword lb_values bond_keyword bond_values
cohesion washino/capillary/viscous/solidify [other model_type/model_name pairs as described here ] settings lb_keyword lb_values bond_keyword bond_values

zero or more lb_keyword/lb_value pairs may be appended after the keyword settings (after all models are specified). Depending on the chosen liquid bridge models the options can be found in the documentation of the liquid bridge general, the easo/capillary/viscous or washino/capillary/viscous models.
zero or more bond_keyword/bond_value pairs may be appended after the keyword settings (after all models are specified). See the documentation of the bond model for details.

Associated material properties

All material properties of the corresponding liquid bridge and the bond model must be added to this model as well but they are not listed below.

Material interaction properties

relativeLiquidBondVolumeLimit ( $\lambda_{vb}$ ): relative liquid volume present in a liquid bridge which is required to form a solid bond [ $\cdot$ ]

Description

This model combines a liquid bridge model with the bond model by converting a liquid bridge to a solid one if the liquid content in the bridge between two particles exceeds the threshold given by $\lambda_{vb}$ , the relative surface liquid limit.

This model can be used as part of a particle contact model and a wall contact model

This model is available for all three liquid bridge models currently available in Aspherix:

and can be activated by appending /solidify to the name of the respective cohesion model. The model computes the liquid content that is contained in the liquid bridge $V_{bond}$ and if the condition

$\frac{V_{bond}}{V_{ij}} \ge \lambda_{vb},$

where $V_{ij}$ is the sum of the particle volumes that are in contact with each other, is true, then the liquid bridge contact model is disabled and instead a solid bond is created.

Note, the volume contained in the liquid bridge depends on the lbVolumeFraction parameter, i.e. only a fraction of the liquid content of the two particles accounts for the liquid volume that forms the liquid bridge.

Restrictions

None.

Coarse-graining information:

Using coarsegraining in combination with this command might lead to different dynamics or system state and thus to inconsistencies.

Default

none