A searchableSurface that employs multiple slightly perturbed underlying surfaces to help prevent the mesh from leaking though small gaps.

Usage🔗

The surface must be defined in the Geometry dictionary, to which a perturbation is applied to identify (and close) gaps.

sphere.stl
{
    type            triSurfaceMesh;
}

sphere
{
    type            searchableSurfaceWithGaps;

    // Underlying surface
    surface         sphere.stl;

    // Perturbation distance
    gap             1e-3;
}