Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation
The present study investigates the effect of partial surface texturing, containing large number of micro-dimples, in lubrication mechanisms. A CFD model is applied to examine the influence of partial surface texturing on pressure and velocity distribution in the flow between mating surfaces with rel...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/11/9/395 |
| _version_ | 1797579082306682880 |
|---|---|
| author | Igal Cohen Roman Goltsberg |
| author_facet | Igal Cohen Roman Goltsberg |
| author_sort | Igal Cohen |
| collection | DOAJ |
| description | The present study investigates the effect of partial surface texturing, containing large number of micro-dimples, in lubrication mechanisms. A CFD model is applied to examine the influence of partial surface texturing on pressure and velocity distribution in the flow between mating surfaces with relative motion or pressure drop. Various texturing parameters were analyzed. The results indicate that the equivalent volume step model effectively simulates surface texturing for a wide range of parameters when the untextured surface is in motion or for pressure-drop-induced flows, as surface texturing is less effective than the equivalent volume step by a margin of under 20%. However, when the motion involves the textured surface, surface texturing is found to be significantly less effective than the equivalent volume step and may even lead to detrimental effects, as the gage pressure can be negative. Furthermore, the influence of different parameters of the dimples, such as dimple area density, texturing portion, aspect ratio and dimple depth, on the efficiency reduction of surface texturing compared with the step model is discussed. |
| first_indexed | 2024-03-10T22:31:54Z |
| format | Article |
| id | doaj.art-47cda9621dcd468fa904f4d8b03e0430 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T22:31:54Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-47cda9621dcd468fa904f4d8b03e04302023-11-19T11:39:54ZengMDPI AGLubricants2075-44422023-09-0111939510.3390/lubricants11090395Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based InvestigationIgal Cohen0Roman Goltsberg1Department of Mechanical Engineering, Technion, Haifa 32000, IsraelDepartment of Mechanical Engineering, Technion, Haifa 32000, IsraelThe present study investigates the effect of partial surface texturing, containing large number of micro-dimples, in lubrication mechanisms. A CFD model is applied to examine the influence of partial surface texturing on pressure and velocity distribution in the flow between mating surfaces with relative motion or pressure drop. Various texturing parameters were analyzed. The results indicate that the equivalent volume step model effectively simulates surface texturing for a wide range of parameters when the untextured surface is in motion or for pressure-drop-induced flows, as surface texturing is less effective than the equivalent volume step by a margin of under 20%. However, when the motion involves the textured surface, surface texturing is found to be significantly less effective than the equivalent volume step and may even lead to detrimental effects, as the gage pressure can be negative. Furthermore, the influence of different parameters of the dimples, such as dimple area density, texturing portion, aspect ratio and dimple depth, on the efficiency reduction of surface texturing compared with the step model is discussed.https://www.mdpi.com/2075-4442/11/9/395partial surface texturingCFD modelingmicro-dimplesmotion-induced flow |
| spellingShingle | Igal Cohen Roman Goltsberg Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation Lubricants partial surface texturing CFD modeling micro-dimples motion-induced flow |
| title | Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation |
| title_full | Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation |
| title_fullStr | Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation |
| title_full_unstemmed | Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation |
| title_short | Partial Surface Texturing in Hydrodynamic Lubrication: A CFD-Based Investigation |
| title_sort | partial surface texturing in hydrodynamic lubrication a cfd based investigation |
| topic | partial surface texturing CFD modeling micro-dimples motion-induced flow |
| url | https://www.mdpi.com/2075-4442/11/9/395 |
| work_keys_str_mv | AT igalcohen partialsurfacetexturinginhydrodynamiclubricationacfdbasedinvestigation AT romangoltsberg partialsurfacetexturinginhydrodynamiclubricationacfdbasedinvestigation |