Table 1 Dimensionless parameters. Typical values for experiments and simulations, along with estimated values for the Earth’s core. Values for the Earth’s core from Olson (2013)
Parameter | Symbol | Definition | Experiments | Simulations | Earth’s outer core |
|---|---|---|---|---|---|
Magnetic Prandtl number | Pm | ν/η | < 10−5 | >10−3 | 10−5 |
Reynolds number | Re | U L/ν | < 108 | < 106 | 108 |
Magnetic Reynolds number | Rm | U L/η | < 103 | < 104 | 300–1000 |
Rossby number | Ro | Δ Ω/Ω | > 10−5 | > 10−5 | 10−5 |
Ekman number | E | ν/Ω L 2 | > 10−8 | > 10−6 | 10−14 |