Secondary Flow

Secondary flow is a relatively minor flow superimposed about the primary flow, the place that the primary flow normally matches very directly the flow design predicted using uncomplicated analytical techniques along with assuming the liquid is inviscid. The main flow of a fluid, particularly in the majority of the flow field remote from solid surfaces immersed within the fluid, is similar to what would be predicted when using the basic principles connected with physics, and if the fluid is inviscid.