Manufacturing Solutions

# Free Surface

BC_Type = FreeSurface: This boundary imposes zero normal velocity at the surface.

Syntax for this boundary condition:

FreeSurface Boundary_Name { ( Temperature Tfs | HeatFlux = qfs | ConvCoeff = hc, ConvTref = Tinf ) }

## Variable Name |
## Description |
## Valid Data Types |

Temperature (Tfs) |
Static temperature |
CONSTANT, EXPRESSION f(x,y,z,t) |

HeatFlux (qfs) |
Magnitude of surface heat flux |
CONSTANT, EXPRESSION f(x,y,z,t) |

ConvCoeff |
Convective heat transfer coefficient |
CONSTANT, EXPRESSION f(x,y,z,t) |

ConvTref |
Outside temperature |
CONSTANT, EXPRESSION f(x,y,z,t) |

If MeshUpdate analysis is being done, the FreeSurface boundaries are allowed to move to remain tangent to velocity vectors.