View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000885 | OpenFOAM | Bug | public | 2013-06-11 16:48 | 2015-02-24 17:00 |
| Reporter | Assigned To | henry | |||
| Priority | high | Severity | major | Reproducibility | have not tried |
| Status | resolved | Resolution | fixed | ||
| Summary | 0000885: RotorDiskSource affected by cylindricalCS bug previously reported 2012-12-21 and other specific bug | ||||
| Description | The new source implemented into Openfoam "RotorDisk" accept as true that correct cylindrical transformation is applied over vector fields using cylindricalCS tool. http://www.openfoam.org/mantisbt/view.php?id=708#bugnotes That transformation is valid for points but not for vector fields. Apart from that bug already known, this source is "valid" only for propellers but not for wind turbines. | ||||
| Steps To Reproduce | Wind Turbine modelled | ||||
| Additional Information | vector localForce = vector(0.0, -f*Cd, tipFactor*f*Cl); //ORIGINAL It is needed to project Cd and Cl ( obtained from polar curves) taking into account the angle of attack "alphaEff". When alphaEff is too small, the cosine is almost one and the approximation may be valid. In the case of helicopters for example the major force contribution is normal to the rotor plane, but when dealing with windmill, it is needed to take into account also the swirl due to the lift component. So if I am correct: -f*Cd ====> -f*Cd*cos(alphaEff)+tipFactor*f*Cl*sin(alphaEff) tipFactor*f*Cl======>tipFactor*f*Cl*cos(alphaEff)+f*Cd*sin(alphaEff) | ||||
| Tags | cylindricalCS | ||||
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The related bug report #708 was fixed last year: http://www.openfoam.org/mantisbt/view.php?id=708 Is this bug report still applicable or was it fixed as well back then? |
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Fixed in OpenFOAM-2.3.x |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2013-06-11 16:48 |
|
New Issue | |
| 2015-02-14 21:36 | wyldckat | Tag Attached: cylindricalCS | |
| 2015-02-14 21:41 | wyldckat | Note Added: 0003773 | |
| 2015-02-24 16:59 | henry | Note Added: 0003887 | |
| 2015-02-24 16:59 | henry | Status | new => resolved |
| 2015-02-24 16:59 | henry | Resolution | open => fixed |
| 2015-02-24 16:59 | henry | Assigned To | => henry |
