ESSOM COMPANY LIMITED
Section 2: Theory
8
Adjustable
Guide Vane
Draft Tube
Begins Here
Runner
Blade
Housing
Figure 2- 10
:
Typical construction of a radial
-
flow Francis turbine
.
In a mixed flow runner type of construction, as shown in
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, the flow is partially radial
and partially axial
.
This type of turbine sometimes is referred to the American type, but the name Francis is used
extensively to designate all inward flow type of turbines
.
Figure 2- 11
:
Typical construction of a mixed
-
flow Francis turbine
.
The runner reaction on the stream at steady operational conditions of the turbine may be considered per
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source not found.
as follows
:
Adjustable
Guide Vane
Draft Tube
Begins Here
Runner Blade
Housing