View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0004226 | OpenFOAM | Contribution | public | 2025-03-22 23:00 | 2025-03-23 20:44 |
| Reporter | joseneto | Assigned To | henry | ||
| Priority | none | Severity | feature | Reproducibility | always |
| Status | closed | Resolution | no change required | ||
| Platform | GNU/Linux | OS | Other | OS Version | (please specify) |
| Product Version | 12 | ||||
| Summary | 0004226: Improve postProcess error messages | ||||
| Description | Recently I faced the problem described in this post: https://www.cfd-online.com/Forums/openfoam/246302-openfoam-9-cannot-use-postprocess-calculate-machno.html It's not necessarily a bug, but I think it would be really good to have a better error message in the postProcess utility when the solver needs to be specified. The functions that requires the solver specification is also not clear. | ||||
| Steps To Reproduce | Run postProcess -func "MachNo(U)" after completing a case, the error message is: Time = 149s Reading fields: volVectorFields: U Executing functionObjects --> FOAM Warning : functionObjects::MachNo MachNo(U) failed to execute. | ||||
| Tags | No tags attached. | ||||
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postProcess cannot know why a functionObject failed, only that it failed, also it does not know if a functionObject requires the solver to be specified or alternatively if other fields should be specified. Clearly the Mach number cannot be calculated from the velocity field U only so the additional fields required must be specified one way or another and postProcess does not know that and cannot inform you with an appropriate error message. In the current implementation of MachNo the thermo package is required and the easiest way of providing that is with the solver option. It would be possible to add documentation to all the functionObjects to indicate how they should be used in different contexts including with the postProcess utility but this is a sizeable task and increases the maintenance overhead both of which would require additional funding. |
