*On May.01.13 , In Design Optimization , by barry*

Pressure at the inlet in the modified model observed is -2670 Pa

Pressure at the vertex finder in the modified model observed is -5230 Pa

Pressure drop from inlet to vertex finder in modified model is 5230-(-2670) = -2560 Pa

*3.4.3 Velocity Contours of mixture at mid plane of cyclone assembly (m/s)*

From the figure 11 (left) at mid plane shows the variation of Velocities at mid plane and the following readings are drawn.

Velocity at the vertex finder in the modified model observed is 43.7 m/s

From the figure 11 (right) at top plane shows the variation of velocities at different heights of the cyclone geometry.

Velocity at the inlet in the modified model observed is 15.8 m/s

Fig 10: *Pressure Contours of mixture at Fig 11: Velocity Contours of mid plane & top plane of cyclone for mixture at mid plane & top*

Modified Model (Pa) plane of cyclone (m/s)

*3.5 Comparion of Results from Initial & Modified Models*

Pressure Contours of mixture at mid plane & top plane of cyclone (Pa) in Initial & Modified Model

• Pressure drop in the initial model observed is 2350 Pa. Pressure drop in the Modified model observed is 1790 Pa. Due to design change the Pressure drop is reduced by 560 Pa in the Modified model. Hence, the modified design can be implemented for the industrial applications.

• Pressure drop from the inlet to vertex finder in the initial model observed is 3140 Pa. Pressure drop from the inlet to vertex finder in the Modified model observed is 2560 Pa. Due to design change the Pressure drop is reduced by 580 Pa

Velocity Contours of mixture at mid plane of cyclone assembly (m/s) in Initial & Modified Model

• Velocity at the inlet in the initial model observed is 19.5 m/s, Velocity at the inlet in the modified model observed is 15.8 m/s.Due to change in the inlet angle and due to increase in the inlet surface area.

• Velocity at the vertex finder in the initial model observed is 48.7 m/s. Velocity at the vertex finder in the modified model observed is 43.7 m/s. Velocity is reduced in the modified model by 5 m/s due to change in the inlet angle and due to change in the inlet surface area.