Missing .lod file

[Ismeret Tenger]

Hi,

Looks to me that vspaero is not generating the .lod file even when I select and run DegenGeom… before.  This is what I get into the Terminal window:

ERROR 7: Could not open Load file: /Volumes/Other/janos/Documents/Projects/OpenVsp/Fuselage FX 79-W-470A_DegenGeom.lod
File: /Users/travis/build/ramcdona/OpenVSP/src/geom_core/VSPAEROMgr.cpp  Line:2406

What should I do to have the .lod file generated?  I looked the Youtube video and read the VSPAero manual, but I do not see any obvious thing I missed in the setup.

My .vsp file is a little unique, it is a wing of eight sections on both side with no control surfaces made from FX 79-W-470A airfoil profiles and the Top view wants to be a circle.

Thanks ahead,
János


Viewer console:

NumberOfNodes:  1394 

NumberOfTris:   2560 

Sref:           396.515625 

Cref:           16.521484 

Bref:           24.000000 

Xcg:            11.796630 

Ycg:            0.000000 

Zcg:            0.455724 

Xmin, Xmax: 0.000000, 24.000000 

Ymin, Ymax: -12.000000, 12.000000 

Zmin, Zmax: -0.141852, 0.799995 

ViewSize: 24.000000 ... ZoomScale: 33.954189 

Finding tri edges... 

Number of nodes: 1394 

Number of tris: 2560 

Number of edges is: 3952 

Note... mesh may not be closed! 

There are 0 ADB cases 

NumberOfSurfaces_: 2 

NumItems: 2 

In the bottom part of the console:

/Volumes/Other/janos/Applications/CAD3D-programs/OpenVSP-3.21.1-MacOS/vspaero -fs 0.20 END 1.000 5.500 10.000 END 0.000 END -omp 4 /Volumes/Other/janos/Documents/Projects/OpenVsp/Fuselage FX 79-W-470A_DegenGeom

NumberOfMachs_: 1 ---> 0.20 

NumberOfAoAs_: 1 ---> 1.000 

NumberOfAoAs_: 2 ---> 5.500 

NumberOfAoAs_: 3 ---> 10.000 

NumberOfBetas_: 1 ---> 0.000 

VSPAERO v.6.0.3 --- Compiled on: May 11 2020 at 00:32:35 PST 

Initializing OPENMP for 4 threads 

NumberOfThreads_: 4 

Mach list overridden by command line -fs inputs 

Alpha list overridden by command line -fs inputs 

Alpha list overridden by command line -fs inputs 

Alpha list overridden by command line -fs inputs 

Beta list overridden by command line -fs inputs 

ReCref_: 10000000.000000 

Sref            = 396.515625 

Cref            = 16.521484 

Bref            = 24.000000 

X_cg            = 11.796630 

Y_cg            = 0.000000 

Z_cg            = 0.455724 

Mach            = 0.200000 

AoA             = 1.000000, 5.500000, 10.000000 

Beta            = 0.000000 

Vinf            = 100.000000 

Vref            = 100.000000 

Rho             = 0.002377 

ReCref          = 10000000.000000 

ClMax           = -1.000000 

MaxTurningAngle = -1.000000 

Symmetry        = NO  

FarDist         = -1.000000 

NumWakeNodes    = 32  

WakeIters       = 5  

NumberOfControlGroups = 0 

Number Of Surfaces: 2 

GeomIDFlags are defined! 

NumberOfDegenWings_: 2 

NumberOfDegenBodies_: 0 

Found: 0 Rotors 

NumberOfDegenBodies_: 0 

NumberOfComponents_: 2 

Done loading in geometry! 

NumberOfSurfaces_: 2 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

NumberOfKuttaNodes: 82 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

Mag: 0.000000 

NumberOfComponents_: 2

Total NumberOfNodes:      1394 

Total NumberOfLoops:      2560 

Total NumberOfEdges:      3952 

Total NumberOfKuttaNodes: 82 

Total surface area: 402.613698 

Minimum loop area constraint set to: 402.613698 

Agglomerating mesh... 

Grid:0 --> # loops:       2560 ...# Edges:       3952 

Grid:1 --> # loops:       1464 ...# Edges:       2856 

Grid:2 --> # loops:        470 ...# Edges:       1220  

Grid:3 --> # loops:        135 ...# Edges:        607  

Grid:4 --> # loops:         45 ...# Edges:        378  

Grid:5 --> # loops:         12 ...# Edges:        284  

Grid:6 --> # loops:          4 ...# Edges:        250  

Grid:7 --> # loops:          2 ...# Edges:        224  

NumberOfGridLevels_: 7 

NumberOfSurfacePatches_: 2 

Xmax_ - Xmin_: 24.000000 

Ymax_ - Ymin_: 24.000000 

Zmax_ - Zmin_: 0.941848 

Wake FarDist set to: 24.000000 

Number Of Trailing Vortices: 82 

NumberOfComponentGroups_: 1 

AllComponentsAreFixed_: 0 

Creating matrix preconditioners data structure... 

Starting at level: 7 

Level: 7 has MaxLoops of: 733 

Level: 6 has MaxLoops of: 476 

Level: 5 has MaxLoops of: 256 

Starting at level: 5 

Created: 6 Matrix preconditioners 

Min matrix: 219 Loops 

Max matrix: 258 Loops 

Avg matrix: 244 Loops 

Updating interaction lists due to subsonic / supersonic Mach change 

Creating interaction lists... 

Forward sweep... 

1000 / 1464 

The Forward Speed Up Ratio: 3.086888 

Backward sweep... 

Total Speed Up Ratio: 7.908903 

Xmax_ - Xmin_: 24.000000 

Ymax_ - Ymin_: 24.000000 

Zmax_ - Zmin_: 0.941848 

Wake FarDist set to: 24.000000 

There are:          2 Vortex Sheets 

Creating vortex sheet data... 

There are:         41 kutta nodes for vortex sheet:          1  

There are:         41 kutta nodes for vortex sheet:          2  

Found a TE node that is common between vortex sheets: 1 and 2 

Done creating vortex sheet data... 

Solving... 

Wake Iter:     1 / 5     ... GMRES Iter:     0 ... Red:        nan / -1.00000   ...  Max:        nan / 1.00000    

Wake Iter:     2 / 5     ... GMRES Iter:     0 ... Red:        nan / -1.00000   ...  Max:        nan / 1.00000    

As you can see it did not finish the 5 iterations.

Thanks ahead for any good tip.

[Adel Sayad]

Hi János, 

could you find a solution to this problem? I also get this error while using the python API for running the VSPAERO with the Panel Method Analysis, by generating a CFDMesh. 

Thanks

Adel

[Rob McDonald]

At present, panel method does not create a *.lod file.  Only the thin-surface mode does.

Rob

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[Adel Sayad]

Thank you, yeah I read about it in your posts in the group. 
There was a problem in my code, which prevented the VSPAERO to run the PM analysis through the API. Finally, it worked.

Regards

Adel