抄録
It is known that it is possible to enhance the axial dispersion in intermittent oscillatory flow through a pipe with circumferential grooves. In the present paper, The groove shape of the a pipe with circumferential grooves is focused. Gas transport experiment in intermittent oscillatory flow through a pipe having circumferential grooves both of square cross section and rectangular cross section. As a result, the effective diffusivity increases in the order of the aspect ratio of the groove of 0.6 with the groove depth of 6 [mm], The aspect ratio of 1.0 with the groove depth of 10 [mm]. The aspect ratio of 0.6 with the groove depth of 10 [mm].
