Radiophysics and Quantum Electronics

, Volume 20, Issue 1, pp 29–33 | Cite as

Prediction of the structures of the surface layers of the planets mars and mercury

  • D. P. Volkov
  • G. N. Dul'nev
  • Yu. P. Zarichnyak
  • B. L. Muratova
Article
  • 13 Downloads

Keywords

Mercury Surface Layer 

Notation

λ, λf, λ1, λ2

effective thermal conductivites of the layer, the framework, the grains, and the gas in an unbounded space at atmospheric pressure and temperature T

T; λr2

radiative component of the thermal conductivity of the gas in the space between two grains

λr3, λm3

thermal conductivities in open pores due to radiation and molecular transfer

λr, λm

radiative and molecular components of the thermal conductivity of the gaseous component in the pores of the second-order structure

m20, m2

overall porosities of the system prior to and after deformation (sintering)

m2f0

porosity of the framework in a state of free filling (prior to sintering)

m22

porosity of the second-order structure

ϰ. ϰf

total deformation and the deformation of the framework upon sintering

N

coordination number, which is equal to the number of grains with which each particle is in contact

csp

specific heat of the soil

ρ,ρ0

bulk densities of the soil and the monolith

y2, y3, y4

relative sizes (radii) of the actual point of contact, the deformed particle, and an average element

δ2, δ3

average sizes of the pores between grains of the framework and of the larger pores in the second-order structure

a

accomodation coefficient, which characterizes the degree of completeness of the energy exchange upon collision of the gas molecules with the surface of the soil particles

Λ

mean free path of the gas molecules at atmospheric pressure and temperature T

Pr

Prandtl number

cp/cv

ratio of the isobaric specific heat to that at constant volume

ϕ

function which takes account of the variation of the thermal resistance of a grain due to the flowing of a thermal flux which enters the grain through the point of contact

α

attenuation coefficient of radiation due to absorption and scattering at the surface of grains having a degree of blackness ε

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Literature Cited

  1. 1.
    V. S. Troitskii and T. V. Tikhonova, Izv. Vyssh. Uchebn. Zaved., Radiofiz.,13, No. 9, 1273 (1970).Google Scholar
  2. 2.
    V. D. Krotikov and O. B. Shchuko, Izv. Vyssh. Uchebn. Zaved., Radiofiz.,16, No. 12, 1811 (1973).Google Scholar
  3. 3.
    G. N. Dul'nev, Yu. P. Zarichnyak, and B. L. Muratova, Izv. Vyssh. Uchebn. Zaved., Radiofiz.,9, No. 3 (1965).Google Scholar
  4. 4.
    G. N. Dul'nev and Yu. P. Zarichnyak, The Thermal Conductivity of Mixtures and Composite Materials [in Russian], Izd. Énergiya, Leningrad (1974).Google Scholar
  5. 5.
    F. Berch, D. Scherer, and G. Speyser, Handbook for Geologists on Physical Constants [Russian translation], IL, Moscow (1949).Google Scholar
  6. 6.
    Radio Sci.,5, No. 2 (1970).Google Scholar
  7. 7.
    R. Sagdeev, Priroda, No. 5 (1974).Google Scholar
  8. 8.
    P. W. Hodge, Revolution in Astronomy, Holiday (1970).Google Scholar

Copyright information

© Plenum Publishing Corporation 1977

Authors and Affiliations

  • D. P. Volkov
  • G. N. Dul'nev
  • Yu. P. Zarichnyak
  • B. L. Muratova

There are no affiliations available

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