Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings - 32nd European Conference on Modelling and Simulation, ECMS 2018 |
| Editors | Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen |
| Pages | 359-365 |
| Number of pages | 7 |
| ISBN (electronic) | 9780993244063 |
| Publication status | Published - 2018 |
| Event | 32nd Annual Conference of the European Conference on Modelling and Simulation, ECMS 2018 - Wilhelmshaven, Germany Duration: 22 May 2018 → 25 May 2018 |
Publication series
| Name | Proceedings - European Council for Modelling and Simulation, ECMS |
|---|---|
| ISSN (Print) | 2522-2414 |
| ISSN (electronic) | 2522-2422 |
Abstract
In many technical applications the effect of surface roughness on the local flow as well as on integral characteristics is significant. Understanding and modeling their effect is an ongoing challenge as there are plenty of surface structures caused by intention, manufacturing, or wear which have different or even contrary effects on the boundary layer flow. Scale-resolving simulations like direct numerical simulations are a valuable tool in this context as they provide highly-resolved view of the local effect of roughness on the flow. However, complex surface structures pose challenges to the generation of commonly used body-fitted structured computational grids. Immersed boundary methods (IBM) are a promising tool for bypassing this challenge. In this paper the IBM implemented in the CFD-solver OpenFOAM is qualified for scale-resolving simulations of turbulent channel flows over rough surfaces by introducing an additional mass-flow controller. By means of three characteristic test-cases the direct numerical simulations with IBM are verified against corresponding simulations with body-fitted grids. The excellent quantitative prediction of average flow quantities as well as turbulent statistics demonstrate the suitability of the method for the simulation of turbulent flows over arbitrary complex rough surfaces.
Keywords
- Direct Numerical Simulations, Immersed Boundary Method, Surface Roughness
ASJC Scopus subject areas
- Mathematics(all)
- Modelling and Simulation
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Proceedings - 32nd European Conference on Modelling and Simulation, ECMS 2018. ed. / Lars Nolle; Alexandra Burger; Christoph Tholen; Jens Werner; Jens Wellhausen. 2018. p. 359-365 (Proceedings - European Council for Modelling and Simulation, ECMS).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Towards Immersed Boundary Methods for Complex Roughness Structures in Scale-Resolving Simulations
AU - Hartung, Konrad M.
AU - Gilge, Philipp
AU - Herbst, Florian
N1 - Publisher Copyright: © ECMS Lars Nolle, Alexandra Burger, Christoph Tholen, Jens Werner, Jens Wellhausen
PY - 2018
Y1 - 2018
N2 - In many technical applications the effect of surface roughness on the local flow as well as on integral characteristics is significant. Understanding and modeling their effect is an ongoing challenge as there are plenty of surface structures caused by intention, manufacturing, or wear which have different or even contrary effects on the boundary layer flow. Scale-resolving simulations like direct numerical simulations are a valuable tool in this context as they provide highly-resolved view of the local effect of roughness on the flow. However, complex surface structures pose challenges to the generation of commonly used body-fitted structured computational grids. Immersed boundary methods (IBM) are a promising tool for bypassing this challenge. In this paper the IBM implemented in the CFD-solver OpenFOAM is qualified for scale-resolving simulations of turbulent channel flows over rough surfaces by introducing an additional mass-flow controller. By means of three characteristic test-cases the direct numerical simulations with IBM are verified against corresponding simulations with body-fitted grids. The excellent quantitative prediction of average flow quantities as well as turbulent statistics demonstrate the suitability of the method for the simulation of turbulent flows over arbitrary complex rough surfaces.
AB - In many technical applications the effect of surface roughness on the local flow as well as on integral characteristics is significant. Understanding and modeling their effect is an ongoing challenge as there are plenty of surface structures caused by intention, manufacturing, or wear which have different or even contrary effects on the boundary layer flow. Scale-resolving simulations like direct numerical simulations are a valuable tool in this context as they provide highly-resolved view of the local effect of roughness on the flow. However, complex surface structures pose challenges to the generation of commonly used body-fitted structured computational grids. Immersed boundary methods (IBM) are a promising tool for bypassing this challenge. In this paper the IBM implemented in the CFD-solver OpenFOAM is qualified for scale-resolving simulations of turbulent channel flows over rough surfaces by introducing an additional mass-flow controller. By means of three characteristic test-cases the direct numerical simulations with IBM are verified against corresponding simulations with body-fitted grids. The excellent quantitative prediction of average flow quantities as well as turbulent statistics demonstrate the suitability of the method for the simulation of turbulent flows over arbitrary complex rough surfaces.
KW - Direct Numerical Simulations
KW - Immersed Boundary Method
KW - Surface Roughness
UR - http://www.scopus.com/inward/record.url?scp=85062841068&partnerID=8YFLogxK
U2 - 10.7148/2018-0359
DO - 10.7148/2018-0359
M3 - Conference contribution
AN - SCOPUS:85062841068
T3 - Proceedings - European Council for Modelling and Simulation, ECMS
SP - 359
EP - 365
BT - Proceedings - 32nd European Conference on Modelling and Simulation, ECMS 2018
A2 - Nolle, Lars
A2 - Burger, Alexandra
A2 - Tholen, Christoph
A2 - Werner, Jens
A2 - Wellhausen, Jens
T2 - 32nd Annual Conference of the European Conference on Modelling and Simulation, ECMS 2018
Y2 - 22 May 2018 through 25 May 2018
ER -