| dc.contributor.advisor | Niemeyer, Jens Prof. Dr. | |
| dc.contributor.author | Engels, Jan Frederik | |
| dc.date.accessioned | 2017-10-30T09:43:10Z | |
| dc.date.available | 2017-10-30T09:43:10Z | |
| dc.date.issued | 2017-10-30 | |
| dc.identifier.uri | http://hdl.handle.net/11858/00-1735-0000-0023-3F4E-C | |
| dc.identifier.uri | http://dx.doi.org/10.53846/goediss-6553 | |
| dc.language.iso | eng | de |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject.ddc | 530 | de |
| dc.title | Modelling turbulent effects of stellar feedback in cosmological simulations | de |
| dc.type | doctoralThesis | de |
| dc.contributor.referee | Niemeyer, Jens Prof. Dr. | |
| dc.date.examination | 2017-10-23 | |
| dc.subject.gok | Physik (PPN621336750) | de |
| dc.description.abstracteng | In order to study the influence of turbulence on star formation, stellar feedback, and
the mixing of metals into the circumgalactic medium (CGM), we implemented a model
for star formation and stellar feedback and employ it in cosmological large eddy simulations using a subgrid scale turbulence model (SGS). We find that the pure SGS
model significantly decreases star formation and increases the efficiency of feedback,
leading to much stronger outflows. We show that these effects can not be mimicked by
cooling suppression and study explicit turbulent feedback, which does not affect diagnostics like star formation rates (SFR) or outflow radii significantly. Finally, we show
that turbulent diffusion of metals does not lead to a higher enrichment in the CGM,
while turbulent diffusion of internal energy reverts most of the effects introduced by
switching on the SGS model and leads to a simulation almost indistinguishable from
one without the SGS model in SFR or (stacked) halo profiles. | de |
| dc.contributor.coReferee | Reiners, Ansgar Prof. Dr. | |
| dc.subject.eng | cosmological simulations, hydrodynamics, turbulence, circumgalactic medium, numerical modelling | de |
| dc.identifier.urn | urn:nbn:de:gbv:7-11858/00-1735-0000-0023-3F4E-C-3 | |
| dc.affiliation.institute | Fakultät für Physik | de |
| dc.identifier.ppn | 1002331153 | |