These are machines dealing with fluids, like (Axial Compressors, pumps and Fans). the term "Axial" is given due to the direction of inward and outward flow. In axial turbo machines the direction of outward flow is the same as the direction of the inward flow since the blades of the machines doesn't change the direction of flow.

the frontal area of a centrifugal compresor is more as compared to axial flow compressor for a given air flow. And for this reason axial compressors are being used in aircraft engines.

Axial flow pump has high specific seed.

According to US unit Ns >10000 has Axial flow pump.

In axial flow pumps, fluid enters and exits along the same direction parallel to the rotating shaft giving high flow rates and low head.

In radial flow pumps, fluid enters and leaves perpendicular to the rotating shaft giving high head and low flow rates.

Thus, in mixed we have combined of both axial and radial.i.e.Liquid will go behind the impeller at certain angle between 0-90degrees normally below 45degree.Mixed flow replace axial when we require head not provided by the axial pump as we have to lift water from a water a lower level and then discharge it.

physically,mixed flow can be identified by bellmouth(diverging converging shape) which shows its between axial and radial.

BILAL BIN NASIR

An axial flow pump operates centrifugally in design. The fluid is pushed outward from the center or axis of the pump.