*4.4. Streamlines*

Figure 24 shows the streamlines at upper disks. The size of the streamlines increases at upper disk compared to that of lower disk. Both mono nanofluid and hybrid nanofluid proceed towards the edges of disks. Figure 25 shows the streamlines for the Reynolds number *Re* at lower disks. The compression of streamlines are clear from Figure 25. The plumes power is strong for lower disks.
