Summary
Transport phenomena in moderately dense gases are studied up to the second virial coefficient with the Boltzmann-Landau equation for quantum gases at temperatures aboveT c. Modified Eulerian equations for quasi-equilibrium processes are given. Equilibrium thermodynamics including interaction are founded from transport theory. First sound velocity in a real gas is derived. The possibility of zero sound in a real, moderately dense gas at high temperatures is shown. A zero sound dispersion relation is given. Parts of the results will be used to calculate the density dependence of transport coefficients; a report thereof will be given separately.
Riassunto
Si studiano i fenomeni di trasporto in gas moderatamente densi sino al seoondo coefficiente viriale con l’equazione di Boltzmanh-Landau per gas quantistici a temperature superiori aT c. Si danno le equazioni di Eulero modifloate per prooessi di quasi equilibrio. Si deduce la prima velocità del suono in un gas reale. Si dimostra la possibilità del suono zero in un gas reale, moderatamente denso alle alte temperature. Si dà una relazione di dispersione del suono zero. Si useranno parte dei resultati per oalcolare la dipendenza dei coefficienti di trasporto dalla densità; un resoconto su questo argomento sarà pubblicato separatamente.
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Grossmann, S. On transport theory in real gases. Nuovo Cim 37, 698–713 (1965). https://doi.org/10.1007/BF02749866
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DOI: https://doi.org/10.1007/BF02749866