The data output for Schlieren can also be called up directly without the graphical user interface via the command line, provided a suitable batch file *.bna is available in the directory. To do this, navigate to the directory in which the calculation is to be carried out. If you enter nachlauf and confirm with the Enter key, a calculation is started with the module NACHLAUF. The default batch file name is nach.bna. This file is saved in the directory is searched for. However, you can also specify a different batch file with the nachlauf filename call (the extension ".bna" is automatically appended if required). The batch files can be created or modified manually using any editor.

 

Example of a batch file for the Schlieren plot in a defined height

SCHL Striae presentation

/CLIP

4511625.826940, 5377867.581440, 4511962.352840, 5377959.528410

/SIZE

750 # Pixel

out # Output file

H Z # Horizontal section in defined altitude

60.0 # Altitude for horizontal section

0 # Velocities

 

Example of a batch file for the Schlieren plot in an element layer

SCHL Striae presentation

/CLIP

4511625.826940, 5377867.581440, 4511962.352840, 5377959.528410

/SIZE

750 # Pixel

out # Output file

H S # Horizontal section trough layer

4 # Layer number for horizontal section

0 # Velocities

 

Example of a batch file for the Schlieren plot in a vertical section

SCHL Striae presentation

/CLIP

4511625.826940, 5377867.581440, 4511962.352840, 5377959.528410

out # Output file

V # Vertical section

0.00 100.00 # zmin/zmax coordinates

2 # Number of inters. nodes for vert. section

4511566.980880 5377784.829170 # Intersection point coordinate

4511929.251940 5377926.427500 # Intersection point coordinate

2.5 25.0 # Grid spacing ds, dz

0 # Velocities

 

The program ignores the characters behind the sign `#'. This space can be used for individual remarks.

The presented batch file for the data output can be downloaded on our Homepage.

 

Here you find a detailed

description of the batch file for the Schlieren illustration

1st line: 'SCHL' for 'SCHLIEREN' ('TEXTURE VISUALIZATION')

2nd line: /SIZE or /CLIP # ormal size or clipped

 

2D model:

with /CLIP:

3rd line: min. and max. coordinates of the clipped area

4th line: /SIZE:

5th line: image width in pixels

6th line: name of the output file

7th line: identification number, number of time step, index

 

with /SIZE:

3rd line: image width in pixels

4th line: name of the output file

5th line: identification number, number of time step, index

 

3D model:

with /CLIP:

3rd line: min. and max. coordinates of the clipped area

4th line: /SIZE:

5th line: image width in pixels

6th line: name of the output file

In a horizontal section through a layer:

7th line: identifier H S for horizontal section

8th line: layer number for horizontal section

In a horizontal section at a defined height:

7th line: identifier H Z for horizontal section in a height

8th line: section height in meters

 

9th line: identification number, number of time step, index

 

with /SIZE:

The third and 4^th line by / CLIP fall away, others moving upward.

 

3D model with vertical section:

1st line: 'SCHL' for 'SCHLIEREN' ('TEXTURE VISUALIZATION'

2nd line: name of the output file

3rd line: identifier V for vertical section

4th line: min. and max. Z-coordinate

5th line: number of section nodes

from 6th line: coordinates of the section points

5th line + number: grid spacing ds, dz

5th line + number + 1: identification number, number of time step, index

 

 

 

Output of hydrographs