﻿ Stator > Main dimensions > Extent

# Extent

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# Extent

Stator extent has to be considered in relation to its inlet and outlet. These 3 areas are coupled, i.e. one is inherently defined by the two others.

Extent from inlet to outlet can be defined by 2 alternative possibilities in principle:

## 1. Center line

preselection of extension direction:Radial, Axial, Tangential (to outlet of previous component), Free form

Definition of axial extension Δz and radial extension Δr
or
length L and angle of center line to horizontal direction ε

Definition of end cross section (Inlet or Outlet) by width b and angle to horizontal direction γ

## 2. Hub, Shroud

separately for hub and shroud:

preselection of extension direction:Radial, Axial, Const. area (with respect to opposite side), Tangential (to outlet of previous component), Free form

Definition of axial extension Δz and radial extension Δr
or
length L and angle of hub/shroud to horizontal direction ε

The angles ε and γ are defined by 0° horizontal right and rising in counter clockwise direction (mathematical positive). A menu with some default angles is supporting angle input:

 0° 180°  90° 270° Perpendicular:        ε perpendicular to inlet or outlet cross section Parallel:        γ parallel to inlet or outlet cross section

Depending on the type of geometric coupling the extent is defining the inlet or the outlet of the component. If the stator has the primary side at outlet, the extent will modify the outlet. Otherwise if the stator has the primary side at inlet, the inlet will be defined by the extent.

 If the neighboring components are primary both at inlet and at outlet then the extent of the stator cannot be specified because it's clearly defined by its neighbor.

## Information

 Design point Design point information, see Global setup Ratio outlet to inlet Diameter ratio dOut/dIn Width ratio bOut/bIn Area ratio AOut/AIn Inlet area AIn Outlet area AOut