**surface_heat_flux

Description

The **surface_heat_flux condition is used to impose a surface heat flux on a line set in 2D or a face set in 3D (i.e. a Neumann boundary condition). In 3D and SI units, it should be given in \(W.m^{-2}\).

Z-set’s convention is chosen such that a positive flux heats the material body, i.e. it is an inflow flux. In other words, it is integrated assuming an inward normal (note that the actual liset or bset alignment is not taken into account).

This keyword replaces the now deprecated keywords **flucons and **surface_heat.

Syntax

**surface_heat_flux \(~\,~\,\) liset value table \(~\,~\,\) faset value table

liset

Character name for the line set upon which the heat flux is applied in 2D.

faset

Character name for the face set upon which the heat flux is applied in 3D.

value

Base value (see ) for the inflow heat flux. This value scales the current table value to obtain the heat flux magnitude.

table

Character name of a predefined loading table or list of tables (see the option ***table in table). The table value determines the exterior temperature.

Example

**surface_heat_flux
  myliset   -10. table1

**surface_heat_flux
  bottom  function  exp(x)*sin(y)*cos(y+z) ; table2