Influence of active cooling at the trailing edge on the thermal behavior of a tilting-pad journal bearing
- In tilting-pad journal bearings (TPJB) with a non-flooded lubrication concept, higher maximum pad temperatures occur than with a flooded bearing design due to the lower convective heat transfer at the pad edges. In this paper, we present an approach to influence the thermal behavior of a five-pad TPJB by active cooling. The aim of this research is to investigate the influence of additional oil supply grooves at the trailing edge of the two loaded pads on the maximum pad temperature of a large TPJB in non-flooded design. We carry out experimental and numerical investigations for a redesigned test bearing. Within the experimental analysis, the reduction in pad temperature is quantified. A simulation model of the bearing is synthesized with respect to the additional oil supply grooves. The simulation results are compared with the experimental data to derive heat transfer coefficients for the pad surfaces. The experimental results indicate a considerable reduction of the maximum pad temperatures. An overall lower temperature level is observed for the rear pad in circumferential direction (pad 4). The authors attribute this effect by a cooling oil carry-over from the previous pad (3). Within the model limits, a good agreement of the simulation and experimental results can be found.
Author: | Nico BuchhornORCiDGND, Michael StottropORCiDGND, Beate BenderORCiDGND |
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URN: | urn:nbn:de:hbz:294-82209 |
DOI: | https://doi.org/10.3390/lubricants9030026 |
Parent Title (English): | Lubricants |
Publisher: | MDPI |
Place of publication: | Basel |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2021/07/27 |
Date of first Publication: | 2021/03/02 |
Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
Tag: | Open Access Fonds CFD; heat transfer; pad deformation; power loss; tilting-pad journal bearing; trailing edge groove |
Volume: | 9 |
Issue: | 3, Article 26 |
First Page: | 26-1 |
Last Page: | 26-18 |
Note: | Article Processing Charge funded by the Open Access Publication Fund of Ruhr-Universität Bochum. |
Institutes/Facilities: | Lehrstuhl für Produktentwicklung |
Institut Product and Service Engineering | |
open_access (DINI-Set): | open_access |
faculties: | Fakultät für Maschinenbau |
Licence (English): | Creative Commons - CC BY 4.0 - Attribution 4.0 International |