# Cyclone

## basic calculation cyclone

**The nomographs by Zanker** can be used to make a preliminary estimate of the size of cyclone needed. The specialist manufacturers of hydrocyclone equipment should be consulted to determine the best arrangements and design for a particular application. Zanker’s method is outlined below and illustrated in the Example below and based on an empirical equation by Bradley (1960):

Where **d50** = the particle diameter for which the cyclone is 50 per cent efficient, **Micron**. **Dc** = diameter of the cyclone chamber, **cm,**. *u* = liquid viscosity, centipoise (mN s/m2). **L** = feed flow rate, l/min, *p*l = density of the liquid, g/cm3. *p*s = density of the solid, g/cm3.

for calculating efficiency cyclone, we can find by below equation.

## calculation Cyclone

Estimate the size of hydrocyclone needed to separate 90 percent of particles with a diameter greater than 20-micron m, from 10 m3/h of a dilute slurry.

**Physical properties:** solid density 2000 kg/m3, liquid density 1000 kg/m3, viscosity 1 mN s/m

So we can find:

from the below graph, we can find d50 is 14 Micron Meter

Determination of d50 from the desired particle separation

for

we can find **D**c using below graph, and **D**c is **16 cm**

after that, for looking at another dimension base on the below figure:

the dimension of the cyclone are:

**Thickness plate 2 mm**

**DC 160 mm**

**DC/5 32 mm**

**DC/3 53.33 mm**

**DC/2 80 mm**

**DC/7 22.86 mm**

**DC/10 16 mm**

## CFD

Step 1:generating geometry base on calculation.

Step 2:generating mesh