Heat transfer coefficient and ζ

AI Thread Summary
To find the heat transfer coefficient for a carbonaceous chondrite meteorite, approximations from regular stones can be used, with specific values provided for stony meteorites, including a specific heat of 1.2 x 10^3 J kg^-1 K^-1 and thermal conductivity of 2.0 W m^-1 K^-1. Calculating the energy required to vaporize 1 g of meteoric material at an initial temperature of 200 K involves understanding the latent heat of vaporization, which is noted as 6.05 x 10^6 J/kg for stony meteoroids. The melting point for these meteorites is approximately 1,700 K, indicating that vaporization is possible under certain conditions. Additional resources, including academic papers and books, were shared to assist in further research on thermodynamic properties and ablation processes. This information is crucial for understanding the thermal behavior of meteorites during atmospheric entry.
PeterH
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How do I find the heat transfer coefficient for a meteorite?
The meteorite is made of carboneus chondrite, but approximations with heat transfer coefficients for regular stones or rocky materials would be just as fine.

Furthermore, how would I calculate the energy required to vaporize 1 g of meteoric material, if the meteor had an initial temperature of 200 K? I haven't been able to find anything about at with temperature stones would evaporate (or if it's even possible for them to?) or their specific heat of vaporization.

This is what I know:
  • Stony meteorite, specific heat: c_sm = 1.2 * 10^3 J kg^-1 K^-1
  • Stony meteorite, thermal conductivity: k_sm = 2.0 W m^-1 K^-1
  • Stony meteorite, density: p_sm = 3.3 * 10^3 kg m^-3
  • Stony meteorite, melting point: T_sm = 1.7 * 10^3 K
  • Stony meteorite, specific melting heat: L_sm =2.6 * 10^5 J kg^-1
Any help would be greatly appreciated!
 
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I'm in a rush to go out but google found..

http://arxiv.org/pdf/1302.3666.pdf

For the thermodynamic properties
of μMETs we adopt values used in Bronshten (1983)
and Love & Brownlee (1991) for stony meteoroids: c = 103
J/(kg K) is the μMET specific heat, Hevap = 6.05 × 10^6
J/kg is the latent heat of vaporization.
 
Thanks! Just what I needed.
 
Possibly Google the word ablation.
 
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