Description

A topoSetFaceSource to select faces whose surface normal aligned with a given direction.

Operands

Operand	Type	Location
output	faceSet	`$FOAM_CASE/constant/polyMesh/sets/<set>`

Description

Example of the normalToFace topoSet by using actions sub-dictionary in system/topoSetDict file:

{
    // Mandatory (inherited) entries
    name        <name>;
    type        faceSet;
    action      <action>;

    // Mandatory entries
    source      normalToFace;
    normal      (1 0 0);
    cos         0.01;
}

where the entries mean:

Property	Description	Type	Required	Default
name	Name of faceSet	word	yes	-
type	Type name: faceSet	word	yes	-
action	Action applied on faces - see below	word	yes	-
source	Source name: normalToFace	word	yes	-
normal	The surface normal direction	vector	yes	-
cos	Tolerance angle (range -1, +1), i.e. cosine of angle between the input normal and face normal	scalar	yes	-

Options for the action entry:

new      | Create a new faceSet from selected faces
add      | Add selected faces into this faceSet
subtract | Remove selected faces from this faceSet