Fixed Wall Devices Hydrocyclones

The Euler number, which is a pressure loss factor, is defined as the limit of the maximum characteristic velocity v obtained by a certain pressure drop AP across the hydrocyclone. It can be expressed as 

The Reynolds number defines flow features of the system and, in the case of hydrocyclones, the characteristic dimension may be taken as the cyclone body diameter D  

The Stokes number may be derived from basic fluid mechanics theory and 

It can be demonstrated (Svarovsky, 1984) that, similar to the case of cyclones, the most appropriate characteristic velocity to describe hydrocyclone operation is the superficial velocity in the hydrocyclone body described by Equation 10.38. 

Owing to the effect of the suspension concentration that has an influence in the dead flux effect, sufficiently discussed in previous sections, the concentration as a fraction C and the imderflow-to-throughput ratio Rf are 

---