Table 1 Parameters of the water-lubricated SGTB
Item | Value |
|---|---|
Inner radius \({r}_{in}(\mathrm{mm})\) | 7.5 |
Outer radius \({r}_{out}(\mathrm{mm})\) | 20 |
Basecircle radius \({r}_{b}(\mathrm{mm})\) | 12 |
Water viscosity \(\mu (\mathrm{Pa}\cdot\mathrm{s})\) | 0.001 (20°) |
Groove number \(N\) | 12 |
Groove depth \({h}_{g}({{\upmu \rm{m}}})\) | 40 |
Spiral angles \(\beta (^\circ )\) | 20 |
Pressure of supply water \({p}_{in}(\mathrm{MPa})\) | 0.1 |
Specific heat at constant volume of water \({c}_{v}\text{\hspace{0.17em}}(\mathrm{J}/\mathrm{kg} \cdot^\circ \mathrm{C})\) | 4200 |
Density of water \({\rho }_{w}\text{\hspace{0.17em}}(\mathrm{kg}/{\mathrm{m}}^{3})\) | 1000 |
Surface tension of bubble \(\sigma (\mathrm{N}/\mathrm{m})\) | 0.3 |
Groove-to-land ratio \({\lambda }_{b}\) | 0.5 |
Groove-to-dam ratio \({\lambda }_{l}\) | 0.6 |