<< Click to Display Table of Contents >> Cutwater compensation 

The cutwater is available for external volutes only. For internal volutes the cutwater is a result of the intersection of spiral and diffuser.
Some initial cutwater parameters can be specified in the Cutwater compensation section:
Inner radius r 
Informative, see Inlet r is the inlet radius of the volute and/or outlet radius of radial diffusers 
Thickness e 
Thickness of the cutwater at the start of the volute (for compensation) 
Compensation φC 
Angle, above which cutwater correction begins (standard: 270°) 
The cutwater does disturb the flow, since the crosssection of the flow is narrowed suddenly by the thickness of the cutwater. To weaken this negative influence, the cutwater can be corrected. This is achieved by assuming that from the angle φC the inner radius r increases linearly to a value of r+e at the end crosssection of the volute. This results in larger volute crosssections in this area, so that the narrowing of flow caused by the cutwater becomes less significant. By clicking on Default, you can return to the standard values for the cutwater. 