Additional views

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Additional views

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The following information can be displayed in the spiral dialog using the "Additional views" button:

3D-Preview

3D model of the currently designed spiral development areas.

Informational values

Some informative values relating to the end cross-section are displayed:

Inner radius

r'

Outer radius

r

Min. axial coordinate

z

Height

H

Width

B

Side ratio

H/B

Equivalent diameter

D

Area

A

Area-radius-ratio

A/rc

Spiral losses are predicted using the theory of Aungier [Outlet Volute only]:

Sizing parameter

Meridional loss coefficient

Tangential loss coefficient

for SP ≥ 1

for SP < 1

Wall loss coefficient

Overall loss coefficient

 

Spiral contour

Frontal view of volute (x-y)

Cross sections

Volute cross sections (z-r)

Radius progression

Radius distribution (φ-r)

Area progression

Area distribution (φ-A)

Area-radius-ratio

Area/Gravity center radius (rC) distribution (φ-A/rc)

Contour angle progression

Angle between the outer spiral contour and the circumferential direction (φ-α). Note, that due to the differential characteristic of the contour angle, the continuity of this distribution is decreased by one.