dc.identifier.uri |
http://dx.doi.org/10.15488/14990 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/15109 |
|
dc.contributor.author |
Cengiz, Kenan
|
|
dc.contributor.author |
Kurth, Sebastian
|
|
dc.contributor.author |
Wein, Lars
|
|
dc.contributor.author |
Seume, Joerg R.
|
|
dc.date.accessioned |
2023-10-18T06:09:11Z |
|
dc.date.available |
2023-10-18T06:09:11Z |
|
dc.date.issued |
2023 |
|
dc.identifier.citation |
Cengiz, K.; Kurth, S.; Wein, L.; Seume, J.R.: Use of High-Order Curved Elements for Direct and Large Eddy Simulation of Flow over Rough Surfaces. In: Technische Mechanik 43 (2023), Nr. 1, S. 38-48. DOI: https://doi.org/10.24352/ub.ovgu-2023-043 |
|
dc.description.abstract |
In the present study, the curved element capabilities of a high-order solver are scrutinized for use in scale-resolving simulations regarding roughness. The approach devised not only suggests a plausible way to adopt a body-fitted grid approach as an alternative to immersed boundary method (IBM), but also enables performing LES instead of DNS without under-resolving the roughness. The method is first tested using various polynomial degrees. Then, it is validated against reference DNS-IBM results from a rough channel flow setup having various Reynolds numbers corresponding to the entire roughness range. The results confirm the validity of the new approach. Finally, a highly loaded low-pressure turbine cascade is simulated under LES resolution with and without the roughness patch. Although a rougher surface is needed for producing a more pronounced impact on the flow, the viability of this method also for pressure-gradient boundary layers is proven. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Magdeburg : Inst. |
|
dc.relation.ispartofseries |
Technische Mechanik 43 (2023), Nr. 1 |
|
dc.rights |
CC BY-SA 4.0 Unported |
|
dc.rights.uri |
https://creativecommons.org/licenses/by-sa/4.0/ |
|
dc.subject |
curved elements |
eng |
dc.subject |
DNS |
eng |
dc.subject |
high-order discretization |
eng |
dc.subject |
ILES |
eng |
dc.subject |
roughness |
eng |
dc.subject.ddc |
620 | Ingenieurwissenschaften und Maschinenbau
|
|
dc.title |
Use of High-Order Curved Elements for Direct and Large Eddy Simulation of Flow over Rough Surfaces |
eng |
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.essn |
2199-9244 |
|
dc.relation.doi |
https://doi.org/10.24352/ub.ovgu-2023-043 |
|
dc.bibliographicCitation.issue |
1 |
|
dc.bibliographicCitation.volume |
43 |
|
dc.bibliographicCitation.firstPage |
38 |
|
dc.bibliographicCitation.lastPage |
48 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|