Hydrocyclone: Geometry Tab (Based on Body Diam. & Inlet Vel.)

HydrocycloneGeometryForBodyDiameter.jpg

This tab appears on the interface dialog of the Hydrocylone (see Hydrocyclone) when the option to size the equipment based on body diameter is selected through the corresponding Equipment tab (see Equipment Data Dialog: Equipment tab) and also the option to use a body diameter-throughput model that is based on inlet velocity is selected through the same tab.

Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable

Default Value

Range

 

 Standard Geometry
The selected standard hydrocyclone geometry.

Rietema

Rietema/

Bradley

Customize Data?
Check this box to customize the geometric data of the currently selected standard geometry, as well as the reduced grade efficiency model parameter corresponding to the currently selected standard geometry.

No

Yes/No

Rectangular Inlet?
Check this box to specify a rectangular inlet pipe.

No

Yes/No

Inlet Height to Body Diameter
The ratio of the height of the inlet pipe to the body diameter.

0

Positive

Inlet Width to Body Diameter
The ratio of the width of the inlet pipe to the body diameter.

0

Positive

Inlet Diameter to Body Diameter
The ratio of the area-equivalent diameter of the inlet pipe to the body diameter.

0.280

Positive

Overflow Diameter to Body Diameter
The ratio of the diameter of the overflow pipe to the body diameter.

0.340

Positive

Underflow Diameter to Body Diameter
The ratio of the diameter of the underflow orifice to the body diameter.

0.200

Positive

Vortex Finder Length to Body Diameter
The ratio of the length of the vortex finder to the body diameter.

0.400

Positive

Cyclone Length to Body Diameter
The ratio of the overall length of the cyclone to the body diameter.

5.000

Positive

 Cone Apex Included Angle
The included angle of the cone apex.

20.0 o

Positive

Inlet Diameter
The area-equivalent diameter of the inlet pipe.

0.000 m

Positive

Inlet Height
The height of the rectangular inlet pipe.

0.000 m

Positive

Inlet Height
The width of the rectangular inlet pipe.

0.000 m

Positive

Overflow Diameter
The diameter of the overflow pipe.

0.000 m

Positive

Underflow Diameter
The diameter of the underflow orifice.

0.000 m

Positive

Vortex Finder Length
The length of the vortex finder.

0.000 m

Positive

Cyclone Length
The overall length of the cyclone.

0.000 m

Positive

 m
Parameter m of the reduced grade efficiency model.

2.45

Positive

Symbol Key: User-specified value (always input); Calculated value (always output); Sometimes input, sometimes output

Standard Geometry

Select one of the available standard geometries (i.e., sets of optimum geometric proportions relative to the body diameter published in the literature).

Customize Data

If this option is checked, you can customize the geometric proportions of the standard geometry, as well as the reduced grade efficiency model parameter.

Rectangular Inlet

If this option is checked, you can specify the ratio of inlet height to body diameter of the rectangular inlet and the program will calculate the ratio of inlet width to body diameter, as well as the inlet height and inlet width of the rectangular inlet. If this option is not checked, the program will calculate the area-equivalent inlet diameter based on the ratio of the area-equivalent inlet diameter to the body diameter.

Reduced Grade Efficiency Model

The reduced grade efficiency model is only used when the option to calculate the particle removal is selected through the Hydrocycloning operation’s data dialog.

Cyclone Design

Based on the body diameter and on the geometric proportions of the selected geometry related to the body diameter, the program calculates the inlet diameter, underflow diameter, overflow diameter, vortex finder length and cyclone length. If the inlet is rectangular, the user must also specify the ratio of inlet height to body diameter and the program also calculates the inlet height and inlet width.

For more information on this equipment, see Hydrocyclone.