Python script:

import netgen.meshing as meshing

mesh = meshing.Mesh()
mesh.Load("srfmsh_fs_1b.vol")
mesh.GenerateVolumeMesh(meshing.MeshingParameters())
mesh.Save("out_fs_1b.vol")


Screen output:

NETGEN-6.2-dev
Developed by Joachim Schoeberl at
2010-xxxx Vienna University of Technology
2006-2010 RWTH Aachen University
1996-2006 Johannes Kepler University Linz
Including OpenCascade geometry kernel
optfile ./ng.opt does not exist - using default values
togl-version : 2
OCC module loaded
loading ngsolve library
NGSolve-6.2.1707-150-ge744100e
Using Lapack
Including sparse direct solver Pardiso
Including sparse direct solver UMFPACK
Running parallel using 4 thread(s)
importing NGSolve-6.2.1707-150-ge744100e
(should) load python file 'script_1.py'
generate vol mesh
 
 Meshing subdomain 1 of 1
 Delaunay meshing
 start tetmeshing
 start tetmeshing
 start tetmeshing
 start tetmeshing
 start tetmeshing
 start tetmeshing
 start tetmeshing
 Success !
 14433 points, 70821 elements
 Volume Optimization
BFGS update error2
Finished executing script_1.py
 load mesh from file /home/tscale/stress_work/surf_mesh_in/examples/out_fs_1b.vol
 14922 Points, 72902 Elements.