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The data import from CFturbo is realized by a LISP-script.

Loading the LISP-Application and Import of the Geometry

•Tools | Load Application (command: _appload)

•Select file "xyz2spline.lsp" from CFturbo-installation directory, load and close dialog

•Execute loaded LISP-application by command xyz2spline

•Select and open *.txt file exported from CFturbo

•Attention: If "; Error: Bad argument type: FILE nil" occurs as error message it can be bypassed by typing the filename in the open-file-dialog manually instead of selecting the file by mouse click.

Construction of Impeller

Creating the blades

•Use the command _loft to create surfaces from curves

Creating rotational surfaces (Hub, Shroud)

•Command _revolve

•Select hub and shroud curves

•Specify axis start point or define axis by [Object/X/Y/Z] <Object>: 0,0,0

•Specify axis endpoint: 0,0,1

•Specify angle of revolution or [STart angle/Reverse/EXpression] <360>:360

Construction of Volute

Creating the open part of volute geometry

1.Command _loft

2.Select profile-curves to loft (part by part, starting with the open one)

3.Enter an option [Guides/Path/Cross-sections only] <Cross-sections only>: cross-sections only

4.Repeat steps 1 to 4 for remaining parts of the volute