The cross-current along the floor of the channel is part of the secondary flow and sweeps dense eroded material towards the inside of the bend.
22.
The most important secondary flow in rivers is the so-called helical flow, with its name derived from Helios ( the Sun in Greek ).
23.
The pressure gradient also accounts for a " secondary flow " of the boundary layer in the water flowing across the floor of the bowl or cup.
24.
Therefore, " in the absence of secondary flow " we would expect low fluid velocity at the outside bend and high fluid velocity at the inside bend.
25.
The nozzle ejector ( or aerodynamic ) design, with variable exit area and secondary flow from the intake, contributed to good expansion efficiency from take-off to cruise.
26.
The secondary flow at the Earth's surface is toward the center of the cyclone but is then drawn upward by the significantly lower pressure at mid and high altitudes.
27.
This flow of the boundary layer is significantly different from the speed and direction of the primary flow of the river, and is part of the river's secondary flow.
28.
The secondary flow around the droplets modifies the coolant flow creating a quasi-mixing effect in the bulk fluid that increases the heat transfer from the pipe walls to the coolant.
29.
In a region of high pressure ( an anticyclone ) the secondary flow includes a slow, widespread descent of air from mid altitudes toward ground level, and then outward across the isobars.
30.
Gathering of erosion products near the concave bank and transporting them to the convex bank is the work of the secondary flow across the floor of the river in the vicinity of a river bend.
