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Spiral development areas |
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Spiral development areas |
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Ü Volute | Spiral areas 
The spiral development areas can be designed and calculated in this dialog box.
The wrap angle (standard: 360°) can be defined under Extension.
You can select Design rule for volute calculation, whereas 3 possibilities exist: Pfleiderer, Stepanoff, Self.
In panel Cut-water you can specify parameters for the cut-water design.
Some informative values relating to the end cross-section are shown in the lower part:
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Under Display options, changes can be made which affect only the graphics:
Show – refers to the image of volute + diffuser |
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Section lines |
radial angle lines |
Cut-water compensation |
cut-water compensation as a larger inner radius |
Show in cross section – refers to the image of the cross-section |
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Cut-water section |
cut-water cross-section |
Equivalent diameter (outlet) |
equivalent diameter D6 (dashed line) |
Filled cross sections |
filled cross-sections |
Radial inlet diffuser |
radial inlet diffuser between impeller and volute |
Impeller outlet |
impeller outlet (symbolic) |
In addition, some diagrams can be displayed:
| • | Volute cross sections (z-r) |
| • | Area distribution (Angle-Area) |
| • | Area/Center radius (rC) distribution (Angle-Area/Radius) |
Page url: http://www.cfturbo.com/fileadmin/content/manual/en/index.html?volgeo.html
