View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0003977 | OpenFOAM | Bug | public | 2023-04-29 19:26 | 2023-04-29 21:48 |
| Reporter | demichie | Assigned To | henry | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Platform | Unix | OS | Other | OS Version | (please specify) |
| Product Version | dev | ||||
| Fixed in Version | dev | ||||
| Summary | 0003977: volume fraction of dispersed phase in drag model Ergun | ||||
| Description | The definition of CdRe for the Ergun drag model is correct only for one dispersed phase, and wrong for more than one. In lines 67-75 of Ergun.C it is computed as return (4.0/3.0) *( 150 *max(1 - continuous, dispersed.residualAlpha()) /max(continuous, continuous.residualAlpha()) + 1.75 *interface_.Re() ); The numerator of the fraction in the first term of the sum should be the volumetric fraction of the dispersed phase, which is different from (1-continuous) when there are multiple dispersed phases. | ||||
| Tags | No tags attached. | ||||
