A Comprehensive Numerical Study of a Wedge-Shaped Textured Convergent Oil Film Gap
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in: Lubricants, Jahrgang 12.2024, Nr. 4, 121, 05.04.2024.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - A Comprehensive Numerical Study of a Wedge-Shaped Textured Convergent Oil Film Gap
AU - Scharf, Raphael
AU - Maier, Michael
AU - Pusterhofer, Michael
AU - Grün, Florian
PY - 2024/4/5
Y1 - 2024/4/5
N2 - The modification of surface geometries to reduce friction is an omnipresent topic of research. In nature, different low-friction surfaces, such as fish skins, exist. To transfer this knowledge to technical applications, for example, to journal or plain bearings, many numerical and experimental studies of textured surfaces have been performed. In this work, the influence of the geometric parameters (texture length , width , angle and start position ) of a wedge-shaped texture on three different convergent oil film gaps was analyzed in full-film lubrication and compared with untextured oil film gaps. With the aid of a CFD (computational fluid dynamics) model, a comprehensive variation study was conducted, and the best-performing wedge-shaped texture was determined. The results show that an open texture at the inlet provides the largest improvement. Furthermore, it can be observed that the optimal relative texture width and absolute inlet height for the three investigated oil film gaps are similar. In contrast to the volume flow of the untextured geometry, the volume flow of the textured one is significantly higher, especially that perpendicular to the movement direction.
AB - The modification of surface geometries to reduce friction is an omnipresent topic of research. In nature, different low-friction surfaces, such as fish skins, exist. To transfer this knowledge to technical applications, for example, to journal or plain bearings, many numerical and experimental studies of textured surfaces have been performed. In this work, the influence of the geometric parameters (texture length , width , angle and start position ) of a wedge-shaped texture on three different convergent oil film gaps was analyzed in full-film lubrication and compared with untextured oil film gaps. With the aid of a CFD (computational fluid dynamics) model, a comprehensive variation study was conducted, and the best-performing wedge-shaped texture was determined. The results show that an open texture at the inlet provides the largest improvement. Furthermore, it can be observed that the optimal relative texture width and absolute inlet height for the three investigated oil film gaps are similar. In contrast to the volume flow of the untextured geometry, the volume flow of the textured one is significantly higher, especially that perpendicular to the movement direction.
UR - https://pureadmin.unileoben.ac.at/portal/en/publications/a-comprehensive-numerical-study-of-a-wedgeshaped-textured-convergent-oil-film-gap(d7f27a57-90e8-4b46-9160-01f97a6a224e).html
U2 - 10.3390/lubricants12040121
DO - 10.3390/lubricants12040121
M3 - Article
VL - 12.2024
JO - Lubricants
JF - Lubricants
SN - 2075-4442
IS - 4
M1 - 121
ER -