Abstract
The main objective of the present paper is to investigate the dynamic viscosity of MWCNT/MgO (20–80)–SAE50 hybrid nano-lubricant. The experiments carried out in solid concentrations ranging from 0.25% to 2% and temperatures ranging from 25 °C to 50 °C. The results revealed that the nano-lubricant shows Newtonian behavior in all the studied temperatures and solid concentrations. Furthermore, the experimental results showed that the dynamic viscosity decreased as the temperature increased. It is also revealed that increasing the solid concentration leads to increasing the dynamic viscosity of the nano-lubricant in all the temperatures. The maximum increase in dynamic viscosity took place at the solid concentration of 2% and temperature of 40 °C by 65% while the minimum increase was at the solid concentration of 0.25% and temperature of 25 °C by 14.4%. Finally, applying curve fitting method on the experimental data, a new model to predict the dynamic viscosity of the studied nano-lubricant in terms of temperature and solid concentration has been proposed.
| Original language | English |
|---|---|
| Journal | International Communications in Heat and Mass Transfer |
| Volume | 78 |
| Pages (from-to) | 48-53 |
| Number of pages | 6 |
| ISSN | 0735-1933 |
| DOIs | |
| Publication status | Published - Nov 2016 |
| Externally published | Yes |
Keywords
- Dynamic viscosity
- MWCNT
- MgO
- Solid concentration
- Temperature
- Nano-lubricant
- Correlation