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Old   April 29, 2004, 13:43
Default Floating point error
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when i solve the problem ,the solver cann't run ahead,I found this words following:

Error: Floating point error: invalid number

Error Object: ()

how can i do. my model: one pipe with length of 20m and diameter of 13mm. I try the scale and units after importing the mesh file from gambit. it's funny when i solve the problem,probly,i try tens of times ,just one time succeed ,I cann't get ideal of it .when i change the diameter into 15mm,I never suceed.Pls help me and give me some advice on model and solving processure .
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Old   April 30, 2004, 02:22
Default Re: Gambit 2 Boundary Layers
Laurence Wallian
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(Cf. mail of An Modh Coinniolach Fri, 18 Jan 2002, 7:59 a.m.)


I have the same error message (boundary layer heigth to lower) using Gambit 2.1.2; and I think it dosen't depend on the gambit release : in fact, I've noticed that it was because of the way the boundary layer expands over the face : the direction is almost perpendicular to the edge of the face where the boundary layer is defined (egde1 ]). So if the face has no perpendicular edges (egde1 | and edge2 / ), they can cross the border of the boundary layer (-), and the only solution is to lower the height of the boudary layer.

]------- /---|

]----- /-----|

]--- /-------|

]- /


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