RTZT format

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RTZT format

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This format can be used if the following geometrical data are available on span sections: radius, axial coordinate, circumferential blade angle and blade thickness.
Values must be separated using spaces.

The file must include the following information:

 

Possible values

Description

Number of blades

Positive Integer

Number of main blades

Splitters flag

0 or 1

0 if no splitter blades

Pitch fraction

Positive float number lower than 1

Position of splitter blades (ignored for main blade)

Number of layers

Integer greater than 1

Number of layers

Thickness flag

N or T

N = Normal thickness values
T = Tangential thickness values

For more details see Thickness definition.

Span fraction

Float number between 0 and 1

Relative position of a span section

Number of points

Integer greater than 1

Number of points describing geometrical data for a span section

r

Nonnegative float number

Radial coordinate value for a  point

theta

Float number

Circumferential blade angle value for a point in radians

z

Float number

Axial coordinate value for a point

thickness

Nonnegative float number

Blade thickness value for a point.

Parts of meridional contour without blades are represented using a zero thickness value

 

Information must be written using the following structure:

Global information

Number of blades




Splitters flag




For each blade (main and splitter if exists)

Pitch fraction




Number of layers

Thickness flag



For each layer

Span fraction

Number of points



For each point

r

theta

z

thickness

 

An example file can be easily generated by exporting any example using the BladeGen export interface.