Analytical and numerical validation of a plate-plate tribometer for measuring wall slip

Data set and case setup for verification and validation numerical studies of the simplified analytical model that predicts the slip length. The plate tribometer is specially designed to measure viscosity and slip length simultaneously for lubrication gaps in the range of approximately 10 micrometres at relevant temperatures and surface roughness. We investigate the inlet effect of the flow on the results by varying the inner radius of the fluid inlet pipe. The outcomes of numerical simulations suggest that variations in the diameter of this inner radius have minimal impact on the results. Specifically, any alterations in the velocity profile near the inlet, brought about by changes in the diameter, quickly revert to the profile predicted by the analytical model. The main conclusion drawn from this study is the validation of the Navier-Slip boundary condition as an effective model for technical surface roughness in CFD simulations and the negligible influence of the inlet effect on the fluid dynamics between the tribometer's plates.

Identifier
Source https://tudatalib.ulb.tu-darmstadt.de/handle/tudatalib/4013
Metadata Access https://tudatalib.ulb.tu-darmstadt.de/oai/openairedata?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:tudatalib.ulb.tu-darmstadt.de:tudatalib/4013
Provenance
Creator Asghar, Muhammad Hassan; Marić, Tomislav; Ben Gozlen, M. Houssem; Raju, Suraj; Fricke, Mathis; Kuhr, Maximilian; Pelz, Peter; Bothe, Dieter
Publisher TU Darmstadt
Contributor Deutsche Forschungsgemeinschaft; TU Darmstadt
Publication Year 2023
Funding Reference Deutsche Forschungsgemeinschaft info:eu-repo/grantAgreement/DFG/SFB1194/TPB01Bothe; Deutsche Forschungsgemeinschaft info:eu-repo/grantAgreement/DFG/SFB1194/TPC06Pelz
Rights GPL - GNU General Public License 3.0; info:eu-repo/semantics/openAccess
OpenAccess true
Contact https://tudatalib.ulb.tu-darmstadt.de/page/contact
Representation
Language English
Resource Type Dataset
Format application/zip
Version First
Discipline Other