Abstract
From our present knowledge a significant influence of gravity on thermophysical properties is only expected for liquids and gases, because the origin is mainly related to gravity driven convections. Hence all physical properties, mainly in liquids, should be regarded which are sensitive to convections All corresponding properties of the convective flow may be relevant. The motion itself may contribute to all transport properties as e.g. to the transport of matter (diffusion), the transport of momentum (viscosity), the transport of heat (heat conductivity). There should be no significant influence on the electrical conductivity, since positive and negative charges are moved together, but diffusion controlled electrical potentials in electrolytes may be changed and magneto—hydrodynamic effects may appear from convections. The kinetic energy associated with the convective flow contributes only little to the specific heat. Convections may of course also originate from other sources than gravity, e.g. from Marangoni—forces. Some details of the mechanisms by which gravity driven convections may contribute to the viscosity, the thermal conductivity and the specific heat are discussed in Sect. 17.1. But the principal aim of this chapter is to discuss the importance of space experiments on diffusion and atomic transport (17.2—17.4) which are free from gravity contributions.
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© 1986 Springer-Verlag Berlin, Heidelberg
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Frohberg, G. (1986). Thermophysical Properties. In: Feuerbacher, B., Hamacher, H., Naumann, R.J. (eds) Materials Sciences in Space. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82761-7_17
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DOI: https://doi.org/10.1007/978-3-642-82761-7_17
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