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Table 2
Physical parameters of the cometary nucleus.
| Parameter | Value |
|---|---|
| Initial nucleus porosity | 70% |
| Dust mantle porosity | 70% |
| Tortuosity |  (a) |
| Initial dust/ice mass ratio | 1 (b) |
| Water ice bulk density | 920 kg m−3 (c) |
| Dust bulk density | 3000 kg m−3 (c) |
| Enthalpy of sublimation |  J mole−1 (d) |
| Heat conductivity |  W m−1 K−1 (c) |
| Volumetric heat capacity |  J K−1 m−3 (c) |
References. (a) Carman (1956); Mekler et al. (1990); Kossacki & Szutowicz (2006); (b)Marboeuf et al. (2014); (c)Marboeuf et al. (2012); (d) Washburn (1928); Delsemme & Miller (1971).
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