shell_surf_curv#

EQ =shell_surf_curv {Galerkin_wt} gamma2 {Interpol_fnc} <float1>

Description / Usage#

This card provides information for solving a definition equation for the total surface curvature in a 2-dimensional bar element. Note that this equation is not yet available in three dimensions and is in fact untested at this time. These building blocks are required by the non-Newtonian surface rheology capability in Goma. Note that <floatlist> contains one constant and it should always be set to one. The Galerkin weight and the interpolation function must be the same for the code to work properly.

shell_surf_curv

Name of the equation to be solved.

{Galerkin_wt}

Two- or four-character value that defines the type of weighting function for this equation, where:

  • Q1-Linear

  • Q2-Quadratic

gamma2

Name of the variable associated with the shell curvature equation.

{Interpol_fnc}

{Interpol_fnc} Two- or four-character value that defines the interpolation function used to represent the variable K where:

  • Q1-Linear Continuous

  • Q2-Quadratic Continuous

<float1>

Multiplier on whole equation. Set to 1.0.

Examples#

The following is a sample card that uses linear continuous curvature interpolation and weight function:

EQ = shell_surf_curv Q1 gamma2 Q1 1.0

Technical Discussion#

See discussion for EQ = shell_surf_div_v

References#

Edwards, D. A., Brenner, H., Wasan, D. T., 1991. Interfacial Transport Processes and Rheology. Butterworth-Heinemann, Boston.