shell_partc#

EQ = shell_partc {Galerkin_wt} SHELL_PARTC {Interpol_fnc} <floatlist>

Description / Usage#

This card provides information for solving the z-averaged concentration of particles inside film flow. Definitions of the input parameters are defined below. The Galerkin weight and the interpolation function must be set the same for the code to work properly.

shell_partc

Name of 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 (not recommended at this time)

SHELL_PARTC

Name of the variable associated with this equation.

{Interpol_fnc}

Two-or four-character value that defines the interpolation function for the variable SHELL_PARTC, where:

  • Q1–Linear

  • Q2–Quadratic (not recommended at this time)

<float1>

Multiplier for the mass matrix term.

<float2>

Multiplier for the advection term.

<float3>

Multiplier for the boundary term. It is not activated.

<float4>

Multiplier for the diffusion term.

<float5>

Multiplier for the source term.

Examples#

Following is a sample card:

EQ = shell_partc Q1 SHELL_PARTC Q1 1. 0. 0. 1. 0.

This applies the film flow equation with all terms activated.

Technical Discussion#

The equation solved is as follows:

../../_images/315_goma_physics.png

  • The mass matrix multiplier activates the time-derivative term.

  • The advection multiplier activates the second term, where the flow rate is dotted onto the gradient of particles concentration and it represents advection of particles due to the liquid film flow.

  • The diffusion multiplier activates the terms inside the divergence operator and represents the Fickian diffusion of particles.

  • The source activates the last term, rate of evaporation of liquid that contributes to the increase of the particles conentration.

  • This equation has to be used with the film profile equation describing SHELL_FILMP and SHELL_FILMH.