/usr/include/freefoam/thermophysicalFunctions/ is in libfreefoam-dev 0.1.0+dfsg+1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/freefoam/thermophysicalFunctions/APIdiffCoefFunc.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc0.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc1.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc14.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc2.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc3.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc4.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc5.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc6.H
/usr/include/freefoam/thermophysicalFunctions/NSRDSfunc7.H
/usr/include/freefoam/thermophysicalFunctions/thermophysicalFunction.H