The Flow Field for Grain Clearing of Cross Flow Fan under Which with a Concave

In the paper, according to the principle of plus on potential function, We put forward the flow field in the impeller of cross fan consisted of a vortex and a potential function relating to the shell and the construction of inlet of fan. The calculation about the flow field for grain clearing of cross fan under which with a concave was given out. The influences offender leading flow in the clean performance were also studied.